HUXWRX Suppressor Buying Guide
A guide to the current HUXWRX suppressors we carry, including what each model is for, how the Flow and Ventum lines differ, compatible mounts and accessories, and independent test results.
How to Choose a HUXWRX Suppressor
HUXWRX builds flow-through suppressors. Instead of trapping gas behind a stack of baffles, they send it forward and out the front, so less gas comes back through the action and into your face. That matters most on gas guns and short barrels, which is why HUXWRX cans are popular on SBRs, AR pistols and PCCs.
Start with the gun, then choose the mount system that fits your setup:
- Flow series (Flow 556k, 556 Ti, 6k, 762 Ti) is fully 3D printed and mounts on HUXWRX's Torque Lock QD muzzle devices only.
- Ventum series (Ventum 556 and 762) uses the HUB (1.375x24) thread and a removable titanium core, so it takes approved HUB mounts from other brands.
- Flow Range 36 Ti, Flow 9K Ti, Flow 9M and Flow 45M cover pistols, PCCs and multi-caliber use, with boosters, 3-lug, direct thread and stiction lock options.
- Mission Flow models are HUXWRX's professional-grade suppressors, including Inconel and direct thread versions.
- Warranty: HUXWRX only warranties suppressors used with its own mounts or the mounts on its approved list. We cover that list in the mounts section.
HUXWRX is the company that used to be OSS Suppressors. The older HX-QD rifle suppressors, the RAD series and the CA$H 9k are now in HUXWRX's legacy collection and are still covered by its warranty, so this guide sticks to the current lineup.
Which HUXWRX Suppressor Should You Buy?
5.56 SBR or AR pistol
Flow 556k
5.5 in. and full-auto rated with no barrel length restrictions. On a 10.3 in. MK18, PEW Science measured the highest shooter's-ear rating it had recorded on that host at the time.
Quietest HUXWRX 5.56
Flow 556 Ti
HUXWRX's quietest full-size dedicated 5.56 suppressor, in 11.4 oz of titanium. Longer than the 556k, and quieter for it.
Lightest .30 cal Flow
Flow 762 Ti
11.8 oz of titanium, rated from 5.56 through .300 PRC. PEW Science found it competitive at the shooter's ear with advanced conventional baffle suppressors on a .308 bolt gun.
HUB mounts or a lower price
Ventum 762 or Ventum 556
Flow-Through on the HUB thread, with a removable core. They're the lowest-priced HUXWRX rifle suppressors we carry.
6mm and 6 ARC
Flow 6k
HUXWRX's first dedicated 6mm Flow-Through suppressor. It also covers 5.56, 5.45, 5.7, 17 HMR and 22 LR.
One suppressor for rifles and pistols
Flow Range 36 Ti
8.4 oz of titanium, rated for pistol calibers up to 9mm and rifles from 17 HMR through .338 Lapua. Full-auto rated with no barrel length restrictions.
Modular 9mm, long or short
Flow 9M
Grade 23 titanium: 8.6 in. and 8.5 oz long, 6.3 in. and 6.3 oz short. Ships with a 1/2x28 piston and booster, ready for a threaded 9mm pistol.
.45 ACP and big bore
Flow 45M
Modular: 8.5 in. and 7.4 oz long, 6.3 in. and 5.4 oz short. Rated for 9mm through .45 ACP plus .45-70 and .458 SOCOM.
High-volume 5.56
Mission Flow 556k L Inconel
Inconel 718, built for heavy volumes of fire. It must run on an Inconel muzzle device.
300 BLK under a handguard
Mission Flow 300 DT
A direct thread suppressor with a 1.6 in. rear section sized to slide under a standard handguard.
How HUXWRX Flow-Through Works
A conventional suppressor slows gas down by trapping it in chambers. Some of that gas goes back down the barrel and out the action, which is what speeds up the bolt, dirties the gun and puts gas in your face on an AR. HUXWRX's Flow-Through design cycles the gas in a helical pattern away from the bore line and out the front of the suppressor. No significant changes to the gun or gas system are needed to run one.
Independent testing backs this up. PEW Science tested the Flow 556k, Flow 556 Ti and Flow 762 Ti on a 10.3 in. MK18 and reported low back pressure on each, along with strong protection at the shooter's ear.
There are tradeoffs. PEW Science describes the Flow-Through sound as lower in frequency, which bystanders can hear as "boomy," and notes that high flow designs can sound louder near berms, vehicles and buildings. PEW Science also found the Flow 762 Ti less efficient with subsonic loads than with supersonic loads. Reviewers have also said a conventional suppressor of the same size may be a decibel or two quieter. On gas guns and short barrels, reduced back pressure is the main reason to choose HUXWRX.
HUXWRX Mount Systems: Torque Lock, HUB, Pistol Mounts and Direct Thread
HUXWRX uses different mount systems across the lineup, and its warranty depends on using the right one. Most suppressor failures come from improper mounting, so HUXWRX only warranties suppressors used with its own muzzle devices, mounts and adapters, 3-lug muzzle devices, or the third-party mounts on its approved adapters and mounts list.
| Mount system | Suppressors | What it takes |
|---|---|---|
| Torque Lock QD | Flow 556k, Flow 556 Ti, Flow 6k, Flow 762 Ti, Mission Flow 556k L Steel, Mission Flow 556 Mini | HUXWRX QD flash hiders and muzzle brakes only |
| Torque Lock QD, Inconel | Mission Flow 556k L Inconel | Inconel HUXWRX QD flash hiders only |
| HUB (1.375x24) | Ventum 556, Ventum 762 | Included direct thread adapter, HUXWRX HUB QD Adapter, or approved third-party HUB mounts |
| Hybrid HUB and pistol mounts | Flow Range 36 Ti, Flow 9K Ti | HUXWRX HUB QD, stiction lock, direct thread, piston and 3-lug adapters |
| Pistol mounts | Flow 9M, Flow 45M | Booster included (1/2x28 on the Flow 9M, .578x28 on the Flow 45M); pistons, pistol direct thread, mini stiction lock and 3-lug |
| Direct thread | Flow 22 Ti, Mission Flow 300 DT, Mission Flow 65 DT | Threads straight onto the barrel |
| Stiction lock | Mission Flow 9K Stiction, Ventum 12K | HUXWRX stiction lock comp or choke |
Torque Lock QD (Flow series)
Every Flow rifle suppressor mounts on a HUXWRX QD flash hider or muzzle brake. Torque Lock uses left-hand threads, so the suppressor threads on counter-clockwise until hand tight and comes off clockwise. Other brands' "QD" mounts are different designs and may not work. There are no third-party options here.
Thread the QD muzzle device onto the barrel and torque it to about 33 ft-lbf. Red Loctite can be used as well. Our HUXWRX Flash Hider and HUXWRX Muzzle Brake don't need timing. Match the muzzle device to the suppressor: 5/8x24 7.62 muzzle devices do not fit 5.56 suppressors, the Flow 762 Ti takes both 556 and 762 muzzle devices, and the Flow 6k takes 556 or 6mm muzzle devices.
HUB (Ventum series)
The Ventum 556 and Ventum 762 use the HUB (1.375x24) rear thread and ship with a direct thread adapter. For quick detach, these HUB mounts are approved for the Ventum series under the HUXWRX warranty:
- HUXWRX's own HUB QD Adapter 2.0, which lets a Ventum lock onto HUXWRX QD muzzle devices
- SilencerCo Bravo ASR Mount and SilencerCo Bravo Direct Thread Mount
- Dead Air Key-Mo Adapter and Dead Air Xeno Adapter
- Q Plan-B
- Rugged Universal Mount (RUM) (the RUM-002 version) and the Rugged Universal Direct Thread Mount
- YHM Phantom QD Mount (YHM-3060)
- Griffin Plan-A
Two are specifically not approved: the Griffin Armament Cam-Lok barrel adapter, which voids the HUXWRX warranty, and the CGS Helios taper mount, which is not compatible with the Ventum. Third-party HUB mounts are approved for the Ventum series only. For the Flow Range 36 Ti and Flow 9K Ti, stick with HUXWRX adapters. Torque any HUB adapter to the Ventum housing at 25 ft-lbf.
Pistol mounts (Flow 9K Ti, Flow 9M, Flow 45M, Flow Range 36 Ti)
Tilting-barrel pistols need a piston with a booster to cycle. The Flow 9K Ti ships with a 1/2x28 booster and a HUB piston adapter, the Flow 9M ships with a 1/2x28 piston and booster, and the Flow 45M ships with a .578x28 booster. For fixed-barrel guns like PCCs and subguns, swap the spring for a HUXWRX Fixed Barrel Spacer or use a HUXWRX Fixed Mount (pistol direct thread mount). The HUXWRX 3-Lug Mount covers MP5-style hosts, and stiction lock comps are another quick attach option. Part numbers for every option are in the compatibility charts for the Flow 9K Ti, Flow 9M, Flow 45M and Flow Range 36 Ti.
Check alignment every time
Check alignment with a caliber-specific alignment rod each time you mount the suppressor, especially with new accessories. Our Alignment Rod comes in 5.56, 7.62 and .338.
HUXWRX Flow Rifle Suppressors: Flow 556k, 556 Ti, 6k and 762 Ti
The Flow rifle suppressors are fully 3D printed, full-auto rated, have no barrel length restrictions and pass 6 cycles of the SOCOM Reliability Stress Test (one cycle is 8 magazines of 30 rounds). All four mount on Torque Lock QD muzzle devices. Plan on detailed cleaning every 2,500 rounds. Ultrasonic cleaners are safe on Flow suppressors. Shop all rifle suppressors, or narrow it to 5.56 or .30 cal and 6mm.
HUXWRX Flow 556k
The Flow 556k was HUXWRX's first 3D-printed Flow-Through suppressor, and it's the short one: 5.5 in. overall, adding 4.9 in. to the barrel. It is a strong fit for a 10.3 or 11.5 in. AR.
Calibers: 5.56/.223, 5.45, 5.7, 17 HMR, 22 LR | Length: 5.5 in. | Weight: 12.9 oz | Diameter: 1.6 in. | Material: 17-4 stainless | Mount: Torque Lock QD 556 | Full-auto: Yes
PEW Science rated it 33.1 on a 10.3 in. MK18 with XM193 (SSS.6.83). The at-ear rating was the highest PEW Science had measured on the MK18 at the time. The tradeoff PEW Science noted is the low, "boomy" sound signature typical of Flow-Through.
Choose the 556k when length matters most. Choose the 556 Ti when you want lower weight and more suppression and can accept 1.3 in. of additional length.
What reviewers found
The Firearm Blog: Found it gas-neutral on a full-auto AR with no added blowback or cyclic rate, and called it built like a tank. The downsides were the large QD muzzle devices with exposed threads and a price above the market leaders. Read the review
Pew Pew Tactical: Named it an editor's pick for AR-15s after long-term use on a 10.3 in. MK18, citing almost no gas blowback and quick on and off. The cons were some first round pop and the proprietary muzzle device. Read the review
HUXWRX Flow 556 Ti
The Flow 556 Ti is the full-size titanium 5.56 Flow, and it's the quietest full-size dedicated 5.56 suppressor HUXWRX makes. At 11.4 oz it's also lighter than the shorter 556k.
Calibers: 5.56/.223, 5.45, 5.7, 17 HMR, 22 LR | Length: 6.8 in. | Weight: 11.4 oz | Diameter: 1.8 in. | Material: Grade 5 titanium | Mount: Torque Lock QD 556 | Full-auto: Yes
PEW Science rated it 41.3 on a 10.3 in. MK18 (SSS.6.167) and 41.1 on a 14.5 in. M4A1 (SSS.6.168), both with XM193. On the MK18 that's well above the 556k's 33.1 with the same host and ammo. PEW Science also discusses titanium sparking, which is a known trait of high flow designs.
What reviewers found
The Firearm Blog: Needed no gas adjustments and found it quieter than the 556k, mostly because the extra length adds internal volume. The complaints were price and heavy muzzle devices. Read the review
Pew Pew Tactical: Picked it as the best lightweight 5.56 suppressor for near-zero blowback. Noted sparking under night vision during a roughly 200 round seasoning period and some first round pop. Read the review
HUXWRX Flow 6k
The Flow 6k is HUXWRX's first dedicated 6mm Flow-Through suppressor, the same 5.5 in. size as the 556k with a 6mm bore. It is built for 6 ARC and other 6mm gas guns.
Calibers: 6mm, 6 ARC, 5.56/.223, 5.45, 5.7, 17 HMR, 22 LR | Length: 5.5 in. | Weight: 12.4 oz | Diameter: 1.6 in. | Material: 17-4 stainless | Mount: Torque Lock QD 556 or 6mm | Full-auto: Yes
It takes 556 or 6mm QD muzzle devices. If you only shoot 5.56, the 556k is the more direct choice. If you have a 6mm host or plan to add one, the 6k covers both.
HUXWRX Flow 762 Ti
The Flow 762 Ti is HUXWRX's lightest rifle suppressor at 11.8 oz, rated from 5.56 all the way to .300 PRC. It covers AR-15s, AR-10s and bolt guns with one suppressor.
Calibers: 5.56, 6mm, 6.5, 7mm, 7.62/.308, .30-06, .300 Win Mag, .300 PRC | Length: 6.7 in. | Weight: 11.8 oz | Diameter: 1.8 in. | Material: Grade 5 titanium | Mount: Torque Lock QD 556 or 762 | Full-auto: Yes
PEW Science rated it 41.6 on a 20 in. .308 Savage bolt gun (SSS.6.113), calling that performance "highly atypical for a silencer with such a high flow rate," and 35.7 on a 10.3 in. MK18 (SSS.6.114). PEW Science also found it less efficient with subsonic loads than supersonic.
Choose it over the Ventum 762 if weight is the priority and Torque Lock mounts work for you. Choose the Ventum if you want HUB mounts or a lower price.
What reviewers found
The Firearm Blog: Ran it on a 9 in. 300 BLK and a 13 in. 7.62x51 SIG MCX-SPEAR and called it "the complete rifle suppressor package." The main criticism was the proprietary muzzle devices, which add real weight. Read the review
Flow 556k vs Flow 556 Ti
Same caliber list, same mount, same ratings. The 556k is 5.5 in. and 12.9 oz of stainless; the 556 Ti is 6.8 in. and 11.4 oz of titanium. The 556 Ti rated much higher in PEW Science's MK18 testing and is the quieter can. The 556k is shorter, which makes it better suited to 10.3 and 11.5 in. SBRs.
HUXWRX Ventum Suppressors: Ventum 556 and Ventum 762
The Ventum series puts Flow-Through on the HUB (1.375x24) thread. Each one has a removable 3D-printed grade 5 titanium core inside a 17-4 stainless housing, finished in Black Nitride QPQ, so you can pull the core for cleaning or replace it. Both are full-auto rated, have no barrel length restrictions, pass 6 cycles of the SOCOM Reliability Stress Test and ship with a direct thread adapter and a Ventum wrench. They're the lowest-priced HUXWRX rifle suppressors we carry.
HUXWRX Ventum 556
The Ventum 556 is the dedicated 5.56 Ventum for AR-15s and other 5.56 rifles. It ships on a 1/2x28 direct thread adapter.
Calibers: 5.56/.223, 5.45, 5.7, 17 HMR, 22 LR | Length: 6.7 in. | Weight: 15.2 oz; 17.0 oz with adapter | Diameter: 1.8 in. | Mount: HUB, 1/2x28 direct thread adapter included | Full-auto: Yes
With the included adapter it adds 6.36 in. to the barrel. It's heavier than the Flow 556 Ti, and the payoff is HUB compatibility and a user-serviceable core. Plan on detailed cleaning every 2,500 rounds.
HUXWRX Ventum 762
The Ventum 762 was HUXWRX's first HUB-compatible Flow-Through suppressor. It carries the same caliber list as the Flow 762 Ti, from 5.56 through .300 PRC, and ships on a 5/8x24 direct thread adapter.
Calibers: 5.56, 6mm, 6.5, 7mm, 7.62/.308, .30-06, .300 Win Mag, .300 PRC | Length: 6.7 in. | Weight: 14.5 oz; 16.3 oz with adapter | Diameter: 1.8 in. | Mount: HUB, 5/8x24 direct thread adapter included | Full-auto: Yes
It's built for bolt and lever actions, centerfire rifles, subguns, bullpups and AK platforms. It weighs 2.7 oz more than the Flow 762 Ti and costs less.
What reviewers found
The Firearm Blog: Needed no gas changes and gave top-tier noise reduction on a 300 BLK bolt gun. The reviewer thought a same-size conventional suppressor might be a decibel or two quieter, which he said you can't hear. Read the review
Athlon Outdoors: Liked the gas management, durability and balance on an AR-10, and said it's not the quietest can on the market. Read the review
Flow 762 Ti vs Ventum 762
Same calibers, same length. The Flow 762 Ti is 11.8 oz of titanium on Torque Lock QD mounts. The Ventum 762 is 14.5 oz with a titanium core in a stainless housing, takes approved HUB mounts from SilencerCo, Dead Air, Q, Rugged, YHM and Griffin, lets you pull the core to clean it, and costs less. If you already run HUB mounts or want one QD system across several suppressor brands, the Ventum is the better fit. If weight matters most, the Flow 762 Ti is the lighter option.
HUXWRX Flow Range 36 Ti Multi-Caliber Suppressor
HUXWRX Flow Range 36 Ti
The Flow Range 36 Ti is HUXWRX's multi-caliber option for pistols, rifles, PCCs and subguns. It is aimed at buyers who want one suppressor to cover several hosts. It uses a hybridized Flow-Through design.
Calibers: Pistols up to 9mm; rifles 17 HMR through .338 Lapua, plus .338 ARC and 8.6 BLK | Length: 6.67 in. | Weight: 8.4 oz; 12 oz with HUB QD adapter | Diameter: 1.6 in. | Material: Grade 5 titanium | Mount: HUB QD adapter included | Full-auto: Yes
It ships with a HUB QD adapter that locks onto HUXWRX QD muzzle devices, except the ELR 338 muzzle brake. With that adapter it adds 6.92 in. to the barrel. For pistols, add a HUXWRX piston with booster, or use the pistol direct thread mount, fixed barrel spacer, 3-lug or stiction lock adapters. There are no barrel length restrictions. Plan on detailed cleaning every 2,000 rounds with cleaners that are safe on titanium.
It's lighter than any dedicated HUXWRX rifle suppressor. Choose the Range 36 Ti when one suppressor needs to cover 9mm, 5.56 and .308 or .338. If it will only be used on an AR, the dedicated 5.56 models are a better place to start.
Shop all multi-caliber suppressors.
HUXWRX Pistol Suppressors: Flow 9K Ti, Flow 9M and Flow 45M
The Flow 9K Ti, Flow 9M and Flow 45M are all 3D-printed titanium and ship with a booster so they run on tilting-barrel pistols out of the box. Most pistols need a piston that matches the barrel thread, or a threaded barrel if yours isn't threaded. Shop all pistol suppressors.
HUXWRX Flow 9K Ti
The Flow 9K Ti replaced the RAD 9. It's lighter, quieter and more efficient than the RAD 9, and it's HUXWRX's first fully 3D-printed pistol suppressor.
Calibers: 9mm, 300 BLK (subsonic and supersonic), 350 Legend, 5.7, 17 HMR, 22 LR | Length: 5.33 in. | Weight: 4.8 oz; 8.9 oz with booster | Diameter: 1.47 in. | Mount: 1/2x28 booster and HUB piston adapter included | Full-auto: Yes
With the booster it adds 5.25 in. to the barrel. It has no barrel length restrictions. With the HUB QD adapter, it runs on 762 QD muzzle devices for 300 BLK only. Service it every 1,000 rounds or less, and put a light coat of high temperature grease on the piston, spring and O-ring before each session.
Its size and weight make it especially well suited to PCCs.
HUXWRX Flow 9M
The Flow 9M (FLOW 9 M) is HUXWRX's modular 9mm suppressor and the 9mm counterpart to the Flow 45M. Run it full length when suppression comes first, or pull the module for the short K configuration when you'd rather have something shorter and lighter.
Calibers: 9mm, 300 BLK (subsonic), 350 Legend, 5.7, 17 HMR, 22 LR | Length: 8.6 in. long, 6.3 in. short | Weight: 8.5 oz long, 6.3 oz short (10.5 and 8.3 oz with booster) | Diameter: 1.375 in. | Material: Grade 23 titanium | Mount: 1/2x28 piston and booster included
It ships in the short configuration with the suppressor module, an external thread protector, the 1/2x28 piston and booster, and a wrench. Mount options include pistons in 1/2x28 and M13.5x1 LH, pistol direct thread mounts in 1/2x28, 5/8x24, M13.5x1 LH and 11/16x24, a fixed barrel spacer for fixed-barrel hosts, mini stiction lock and 3-lug. Plan on detailed cleaning every 1,000 rounds, and clean and grease the booster assembly after each session.
The Flow 9M is primarily a 9mm pistol suppressor, and the included 1/2x28 booster makes it ready for a threaded semi-auto 9mm. The long configuration gives you more suppression, while the short configuration cuts length and weight.
Next to the Flow 9K Ti, the 9M is about 1 in. longer and 1.5 oz heavier in the short configuration, and 3.3 in. longer and 3.7 oz heavier long. Choose the 9M if a pistol is the main host and you want long and short configurations. Choose the 9K Ti for the shortest and lightest setup, supersonic 300 BLK, or full-auto use. The 9M doesn't have a published full-auto rating.
HUXWRX Flow 45M
The Flow 45M is HUXWRX's modular pistol suppressor. Run it full length for more suppression, or pull the module for the short K configuration.
Calibers: 9mm, 10mm, .45 ACP, .45-70, .458 SOCOM, .400 Legend | Length: 8.5 in. long, 6.3 in. short | Weight: 7.4 oz long, 5.4 oz short (9.7 and 7.7 oz with booster) | Diameter: 1.375 in. | Material: Grade 23 titanium | Mount: .578x28 booster included | Full-auto: .45 ACP, magazine fed
It ships with the suppressor module, an external thread protector, the .578x28 piston and booster, and a wrench. Mount options include pistons in 1/2x28 and M13.5x1 LH, pistol direct thread mounts, mini stiction lock and 3-lug. Plan on detailed cleaning every 1,000 rounds.
Choose it over the Flow 9K Ti if you shoot .45 ACP or 10mm, or want one suppressor for a pistol and a .45-70 or .458 SOCOM rifle. For 9mm only, the 9K Ti is shorter and lighter, and the Flow 9M gives you the same long or short setup sized for 9mm.
What reviewers found
Capitol Armory customer (Will): Runs it on a 9mm CZ Scorpion and an LWRC SMG45 and likes that it's modular. "This is my first Hux suppressor and it does not disappoint."
Flow 9K Ti, Flow 9M or Flow 45M?
For a 9mm PCC, or the shortest and lightest 9mm can, the Flow 9K Ti: it's 4.8 oz and 5.33 in. For a 9mm pistol where you want the choice of long or short, the Flow 9M. For .45 ACP, 10mm or a big-bore rifle, the Flow 45M. For one suppressor that covers a 9mm pistol and rifles, look at the Flow Range 36 Ti instead.
The Flow 9M and Flow 45M share the same modular layout, 1.375 in. diameter and Grade 23 titanium. The 9M is 0.1 in. longer and 1.1 oz heavier in the long configuration, the same 6.3 in. long and 0.9 oz heavier in the short configuration, and ships with a 1/2x28 piston where the 45M ships with a .578x28.
HUXWRX Flow 22 Ti Rimfire Suppressor
HUXWRX Flow 22 Ti
The Flow 22 Ti is HUXWRX's lightest and quietest Flow-Through suppressor. It's 3D printed in grade 5 titanium and ships ready for 1/2x28 threads.
Calibers: 22 LR, 22 Magnum, 17 HMR, 5.7 | Length: 5.53 in. | Weight: 3.9 oz | Diameter: 1.06 in. | Mount: 1/2x28 direct thread | Full-auto: Yes
It has no barrel length restrictions and adds 4.9 in. to the barrel. Torque it to 125 in-lbf. It doesn't come apart, so cleaning means soaking it. Clean it every 500 rounds, or when the suppressor reaches 5 oz, whichever comes first. The Suppressor Sauce Cleaning Kit is built for that.
Shop all rimfire suppressors.
What reviewers found
Pew Pew Tactical: Named it the best flow-through .22 LR suppressor and the lightest in its test on a Ruger Mark IV 22/45 Lite. It noted first round pop and that it isn't self-serviceable. Read the review
Capitol Armory customer (Levi Q): Tried a number of .22 LR suppressors at an event and bought the Flow 22 Ti for a Ruger MKIV, and added HUXWRX's cleaning solution.
HUXWRX Ventum 12K Shotgun Suppressor
HUXWRX Ventum 12K
The Ventum 12K is a titanium 12 gauge suppressor built for the Genesis Gen-12 line of short-barreled shotguns. Like the rifle Ventums, it has a removable 3D-printed titanium core.
Gauge: 12 gauge | Length: 6.8 in. | Weight: 10.4 oz | Material: Titanium | Mount: HUB stiction lock adapter | Front cap: Breaching cap
It ships with a HUB stiction lock adapter and a breaching cap, and it mounts on a stiction lock choke. The housing, cap and adapter are PVD-coated titanium. Service it every 850 rounds or less. We also sell it as a Gen-12 SBS and Ventum 12K package with the shotgun. Shop all shotgun suppressors.
HUXWRX Mission Flow Suppressors
The Mission Flow suppressors are HUXWRX's professional-grade models. They use the same Flow-Through design in heavier-duty builds: 17-4 stainless or Inconel 718, finished in PRISM2 coating. Full-auto ratings and barrel length limits aren't published for these models, so call us before you build around one.
HUXWRX Mission Flow 556k L Inconel
Also sold as the FLOW 556k L In (Black Magic). It's 718 Inconel with an integrated locking collar, built to adapt to short or standard-length 5.56 rifles and hold up to heavy volumes of fire.
Caliber: 5.56 | Length: 5.55 in. | Weight: 16.25 oz | Diameter: 1.8 in. | Material: Inconel 718 | Mount: Inconel QD 556 flash hider
It must be mounted on an Inconel muzzle device. Inconel QD 556 flash hiders come in 1/2x28, 5/8x24 and a Sig taper version. Don't put it on a stainless flash hider.
HUXWRX Mission Flow 556k L Steel
Also sold as the FLOW 556k L S (Silver Magic). It's the 17-4 stainless version of the 556k L, with the integrated locking collar, designed for standard volumes of fire.
Caliber: 5.56 | Length: 5.55 in. | Weight: 16.1 oz | Diameter: 1.8 in. | Material: 17-4 stainless | Mount: QD 556 1/2x28 flash hider (M3726)
Choose the Inconel version for sustained high-volume fire. For most semi-auto use, the Flow 556k is lighter and uses the same flash hider family.
HUXWRX Mission Flow 556 Mini
Also sold as the FLOW 556 Mini. It's a compact 17-4 stainless 5.56 suppressor for professional users.
Calibers: 5.56, .223 | Length: 5 in. | Weight: 10.6 oz | Diameter: 1.6 in. | Material: 17-4 stainless | Mount: QD 556 1/2x28 flash hider (M3726)
It is the shortest and lightest 5.56 HUXWRX suppressor we sell, half an inch shorter than the Flow 556k.
HUXWRX Mission Flow 300 DT
Also sold as the FLOW 300 1.8-8 DT. It's a dedicated 300 Blackout suppressor for subsonic and supersonic loads.
Caliber: 300 BLK | Length: 8 in. | Weight: 14.5 oz | Diameter: 1.6 in. rear, 1.8 in. front | Material: 17-4 stainless | Mount: 5/8x24 direct thread
The rear 4 in. is 1.6 in. in diameter so it can slide under a standard handguard, and the front 4 in. opens up to 1.8 in. for more volume.
HUXWRX Mission Flow 65 DT
Also sold as the FLOW 65 DT. It's a direct thread 6.5 Creedmoor suppressor for precision bolt actions.
Caliber: 6.5 Creedmoor | Length: 9.06 in. | Weight: 26.2 oz | Diameter: 2 in. | Material: 17-4 stainless | Mount: Direct thread
It is the largest HUXWRX suppressor we sell, built for a precision 6.5 Creedmoor bolt gun rather than a light carry rifle.
HUXWRX Mission Flow 9K Stiction
Also sold as the FLOW 9k Stiction. It's a 17-4 stainless 9mm suppressor that mounts on a HUXWRX mini stiction lock comp.
Caliber: 9mm | Length: 5.33 in. | Weight: 9.1 oz | Diameter: 1.47 in. | Material: 17-4 stainless | Mount: Mini Stiction Lock Comp 9mm (M2550)
It's the same length and diameter as the Flow 9K Ti in stainless instead of titanium, so it weighs more. For most pistol owners, the Flow 9K Ti is the more practical option because the booster is included.
HUXWRX Suppressor Comparison Table
Lengths and weights are for the suppressor alone. Muzzle devices, adapters and boosters add length and weight.
| Model | Type | Calibers | Length | Weight | Material | Mount |
|---|---|---|---|---|---|---|
| Flow 556k | Rifle | 5.56, 5.45, 5.7, 17 HMR, 22 LR | 5.5 in. | 12.9 oz | 17-4 SS | Torque Lock QD |
| Flow 556 Ti | Rifle | 5.56, 5.45, 5.7, 17 HMR, 22 LR | 6.8 in. | 11.4 oz | Titanium | Torque Lock QD |
| Flow 6k | Rifle | 6mm, 6 ARC, 5.56, 5.45, 5.7, 17 HMR, 22 LR | 5.5 in. | 12.4 oz | 17-4 SS | Torque Lock QD |
| Flow 762 Ti | Rifle | 5.56 to .300 PRC | 6.7 in. | 11.8 oz | Titanium | Torque Lock QD |
| Ventum 556 | Rifle | 5.56, 5.45, 5.7, 17 HMR, 22 LR | 6.7 in. | 15.2 oz | Ti core, SS housing | HUB |
| Ventum 762 | Rifle | 5.56 to .300 PRC | 6.7 in. | 14.5 oz | Ti core, SS housing | HUB |
| Flow Range 36 Ti | Multi-caliber | 9mm; 17 HMR to .338 Lapua | 6.67 in. | 8.4 oz | Titanium | HUB QD adapter |
| Flow 9K Ti | Pistol/PCC | 9mm, 300 BLK, 350 Legend | 5.33 in. | 4.8 oz | Titanium | Booster, HUB |
| Flow 9M | Pistol | 9mm, 300 BLK sub, 350 Legend | 6.3 to 8.6 in. | 6.3 to 8.5 oz | Grade 23 Ti | Booster |
| Flow 45M | Pistol | 9mm to .45 ACP, .45-70, .458 SOCOM | 6.3 to 8.5 in. | 5.4 to 7.4 oz | Grade 23 Ti | Booster |
| Flow 22 Ti | Rimfire | 22 LR, 22 Mag, 17 HMR, 5.7 | 5.53 in. | 3.9 oz | Titanium | 1/2x28 |
| Ventum 12K | Shotgun | 12 gauge | 6.8 in. | 10.4 oz | Titanium | Stiction lock |
| Mission Flow 556k L Inconel | Rifle | 5.56 | 5.55 in. | 16.25 oz | Inconel 718 | Inconel QD |
| Mission Flow 556k L Steel | Rifle | 5.56 | 5.55 in. | 16.1 oz | 17-4 SS | Torque Lock QD |
| Mission Flow 556 Mini | Rifle | 5.56 | 5 in. | 10.6 oz | 17-4 SS | Torque Lock QD |
| Mission Flow 300 DT | Rifle | 300 BLK | 8 in. | 14.5 oz | 17-4 SS | 5/8x24 DT |
| Mission Flow 65 DT | Rifle | 6.5 Creedmoor | 9.06 in. | 26.2 oz | 17-4 SS | Direct thread |
| Mission Flow 9K Stiction | Pistol/PCC | 9mm | 5.33 in. | 9.1 oz | 17-4 SS | Mini stiction lock |
Lightest: Flow 22 Ti (3.9 oz), then the Flow 9K Ti (4.8 oz). Lightest rifle-rated: Flow Range 36 Ti (8.4 oz). Lightest dedicated 5.56: Flow 556 Ti (11.4 oz). Shortest 5.56: Mission Flow 556 Mini (5 in.), then the Flow 556k (5.5 in.). Modular, long or short: Flow 9M and Flow 45M. Full-auto ratings are in each model's spec line and in the FAQ below.
HUXWRX Accessories: Muzzle Devices, Adapters, Pistol Mounts and Cleaning
QD muzzle devices (Flow rifle suppressors)
- HUXWRX Flash Hider in 1/2x28, 5/8x24 (7.62) and 5/8x24 (6mm)
- HUXWRX Muzzle Brake in 1/2x28 and 5/8x24 (7.62)
- Blastphemy blast deflector, which locks onto a HUXWRX QD flash hider or brake when the suppressor is off and pushes blast forward
HUB adapters (Ventum series)
- HUB Direct Thread Adapter in 1/2x28 and 5/8x24, for fixed-barrel firearms only
- HUB QD Adapter 2.0, which lets a Ventum run on HUXWRX QD muzzle devices
- Approved third-party HUB mounts: SilencerCo Bravo ASR Mount, Dead Air Key-Mo Adapter, Dead Air Xeno Adapter, Q Plan-B, Rugged Universal Mount (RUM), YHM Phantom QD Mount and Griffin Plan-A
Pistol mounting (Flow 9K Ti, Flow 9M, Flow 45M, Flow Range 36 Ti)
- HUXWRX Piston for tilting-barrel pistols
- HUXWRX Fixed Barrel Spacer, which replaces the booster spring on fixed-barrel hosts
- HUXWRX Fixed Mount (pistol direct thread mount) in 1/2x28 and 5/8x24
- HUXWRX 3-Lug Mount for MP5-style hosts
Cleaning and alignment
- Suppressor Sauce Cleaning Kit and the Suppressor Sauce Refill Kit; Suppressor Sauce is made for cleaning Flow-Through designs
- Alignment Rod in 5.56, 7.62 and .338
Browse everything in muzzle devices, rifle mounts and pistons and pistol mounts.
HUXWRX Suppressor FAQ
What is the best HUXWRX suppressor?
It depends on the gun. For a 5.56 SBR, the Flow 556k. For the quietest HUXWRX 5.56, the Flow 556 Ti. For .30 cal, the Flow 762 Ti, or the Ventum 762 if you want HUB mounts. For one can across rifles and pistols, the Flow Range 36 Ti. For a 9mm PCC, the Flow 9K Ti. For a modular 9mm pistol can you can run long or short, the Flow 9M. For rimfire, the Flow 22 Ti.
What is the best budget HUXWRX suppressor?
The Ventum 556 and Ventum 762 are the lowest-priced HUXWRX rifle suppressors we carry.
What is the difference between the HUXWRX Flow 9M and Flow 9K Ti?
The Flow 9M is modular: 8.6 in. and 8.5 oz long, or 6.3 in. and 6.3 oz short, in Grade 23 titanium, with a 1/2x28 piston and booster in the box. The Flow 9K Ti is a fixed 5.33 in. and 4.8 oz, and it ships with a 1/2x28 booster and a HUB piston adapter. The 9K Ti is also rated for supersonic 300 BLK and for full-auto use; the 9M is rated for subsonic 300 BLK and has no published full-auto rating. Most shooters put the 9M on a pistol and the 9K Ti on a PCC.
What is Flow-Through technology?
Flow-Through sends gas forward through the suppressor and out the front instead of trapping it. That cuts back pressure, so less gas comes back through the action and into the shooter's face, and the gun stays cleaner. PEW Science reported low back pressure on the Flow 556k, Flow 556 Ti and Flow 762 Ti.
Is HUXWRX the same company as OSS?
Yes. OSS Suppressors became HUXWRX, and OSS suppressors are still covered by the HUXWRX warranty. The HX-QD, RAD and CA$H 9k suppressors are now in HUXWRX's legacy collection.
Can I use other brands' mounts on a HUXWRX suppressor?
Flow rifle suppressors use HUXWRX Torque Lock QD muzzle devices only. The Ventum 556 and 762 take approved HUB mounts, including SilencerCo Bravo ASR and direct thread, Dead Air Key-Mo and Xeno, Q Plan-B, Rugged RUM, YHM Phantom QD and Griffin Plan-A. The Griffin Cam-Lok voids the HUXWRX warranty, and the CGS Helios is not compatible with the Ventum.
Which HUXWRX suppressors are full-auto rated?
The Flow 556k, Flow 556 Ti, Flow 6k, Flow 762 Ti, Ventum 556, Ventum 762, Flow Range 36 Ti, Flow 9K Ti and Flow 22 Ti. The Flow 45M is full-auto rated for magazine-fed .45 ACP. The Flow 9M, Ventum 12K and Mission Flow models don't have a published full-auto rating, so call us before you plan on full-auto use.
Do HUXWRX suppressors have barrel length restrictions?
There are no barrel length restrictions on the Flow 556k, Flow 556 Ti, Flow 6k, Flow 762 Ti, Ventum 556, Ventum 762, Flow Range 36 Ti, Flow 9K Ti and Flow 22 Ti.
How often should I clean a HUXWRX suppressor?
Detailed cleaning is due every 2,500 rounds for the Flow rifle and Ventum suppressors, every 2,000 rounds for the Flow Range 36 Ti, every 1,000 rounds for the Flow 45M and Flow 9M, every 1,000 rounds or less for the Flow 9K Ti, every 850 rounds for the Ventum 12K, and every 500 rounds for the Flow 22 Ti. HUXWRX Suppressor Sauce is built for cleaning Flow-Through designs.
What is the lightest HUXWRX suppressor?
The Flow 22 Ti at 3.9 oz. For centerfire, the Flow 9K Ti at 4.8 oz. For a dedicated 5.56 rifle suppressor, the Flow 556 Ti at 11.4 oz.
Ready to Buy Your HUXWRX Suppressor?
Every HUXWRX suppressor purchase includes electronic filing, and your suppressor ships from our facility to your home. If you need a trust or fingerprints, we handle those too. You can also upload an existing EFT file directly to our site.
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