AAC M4-2000
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Under ATF's October 9 policy, you can buy a suppressor on a 4473 in some states. We still recommend a Form 4: it stays compliant if the policy changes, and ATF approvals come back in days.
AAC M4-2000 SUPPRESSOR - FULL-AUTO RATED, HUB MOUNT, 5.56 AND 6MM ARC
The AAC M4-2000 is a full-auto rated 5.56 NATO suppressor made from fully 3D-printed Inconel, with a max caliber rating of 6mm ARC. It measures 6.05" long and 1.63" in diameter, and weighs 16.7 oz. Redesigned low back-pressure performance makes this Inconel suppressor a strong fit for AR-15s and other semi-auto and gas-operated rifles, where less gas back through the action means a more comfortable shooting experience.
Short barrels are well within this AR-15 suppressor's range. AAC lists a 10.3" minimum barrel length for 5.56 NATO, so the M4-2000 can serve on a compact SBR as readily as a full-length carbine or rifle.
At the rear, a HUB (1.375x24) interface makes the M4-2000 a HUB-compatible suppressor with plenty of mounting freedom. AAC's modern threaded taper mount comes in the box, made up of the Hub Mount (1x16LH) and a Blackout Flash Hider (1x16LH, 1/2x28). Shooters who prefer a different system can swap the Hub Mount for other HUB-compatible mounts, and the owner's manual directs users to confirm full compatibility before installing another manufacturer's adapter.
CAPITOL ARMORY'S OPINION
The M4-2000 is an iconic name in the suppressor world, and it's right at home on AR-15s and other semi-automatic rifles. It's built for hard use while still delivering good suppression and lower backpressure than many other suppressors. Whether you're setting up a duty rifle, a home defense carbine, or a range toy you'd just like to keep a little quieter, it fits the role.
We see the move to 3D-printed Inconel as a meaningful upgrade. Inconel's heat resistance and corrosion tolerance put it in a different class than stainless steel or aluminum, and printing allows internal geometry that traditional manufacturing methods can't produce. That low back-pressure design also keeps your gas system cleaner and cuts down on the eye-watering blowback some cans are known for.
HUB is a welcome addition here. You can run the included Hub Mount (1x16LH) with AAC's tapered system, or swap to any HUB mount you like better. The one tradeoff is weight. At 16.7 oz and 6.05" long, it's a bit heavier than some of the ultra-light cans on the market, but it has a level of durability those cans don't, and it still balances well on most AR platforms without significant point-of-impact shift. If you also need a .30 caliber can to pair it with, the AAC 762-SDN-6 is worth consideration.
FEATURES
- Length: 6.05"
- Weight: 16.7 oz
- Mount: HUB (1.375x24) interface, ships with Hub Mount (1x16LH)
- Caliber rating: 5.56 NATO, max caliber 6mm ARC
- Full-auto rated
- Color: Black
- Diameter: 1.63"
- Material: 3D printed Inconel
- Redesigned low back-pressure performance for semi-auto and gas-operated rifles
- Modern threaded taper mount with the included Blackout Flash Hider (1x16LH, 1/2x28)
WHAT'S INCLUDED
- AAC M4-2000 suppressor
- Hub Mount (1x16LH)
- Blackout Flash Hider (1x16LH, 1/2x28)
COMPATIBILITY
- Compatible Mounts: Hub Mount (1x16LH), HUB-compatible mounts
- Compatible Muzzle Devices: Blackout Flash Hider (1x16LH)
MEDIA
BARREL RESTRICTIONS
- 10.3" : 5.56 NATO
| Part Number | SR-103203 |
|---|---|
| Weight | 1lb 0.7oz |
| Manufacturer | AAC |
| Caliber | 5.56mm |
| Length | 6.05 |
| Diameter | 1.625" |
| Full Auto Rated | Yes |
| Mount | HUB/Bravo - 1.375x24 |
| Thread Pitch | Multiple Thread Pitchs Available |
| Color | Black |
| Finish | Cerakote |
| Materials | 3D Printed Inconel |
| Can Be Disassembled | No |
| Warranty | Lifetime |