CAT BBK
Capitol Armory is licensed in all suppressor-friendly states. Form 4 or 4473? Read 4473 vs. Form 4 Suppressors. Your choice during checkout. See how suppressors direct to your door works or choose to send to your local dealer.
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.
CAT BBK .338 SUPPRESSOR - DUAL-ROLE SUBSONIC AND PRECISION RIFLE SILENCER
The CAT BBK is a .338 caliber (8.6mm) suppressor built for two roles in one platform: subsonic large-bore use in 338 ARC and 8.6 BLK, and supersonic precision rifle use in .338 Lapua Magnum. Built using CAT's SNIPER3 technology, the BBK is 3D-printed from Grade 5 titanium through Laser Powder Bed Fusion, allowing internal geometries that traditional machining can't produce. The design is caliber-specific and tuned around the pressure profiles of 338 ARC and 8.6 BLK subsonic loads while still supporting .338 Lapua Magnum on longer barrels. A DLC finish protects the exterior against corrosion and wear, and the 1.375x24 HUB rear interface opens the BBK up to the full ecosystem of HUB-compatible mounts and muzzle devices. Most .338 suppressors are built around a single use case; the BBK is optimized to perform across both subsonic close-range and supersonic long-range shooting.
CAPITOL ARMORY'S OPINION
The BBK fills a gap that has been growing since 338 ARC and 8.6 BLK started gaining traction. These cartridges were designed around subsonic terminal performance, and the BBK is one of the first suppressors built specifically to optimize for their pressure profiles rather than being adapted from something else. The fact that it also handles .338 Lapua Magnum on longer barrels means you are not locked into a single-purpose can.
The no-mount-included approach is the right call here, given the variety of thread pitches across .338 hosts. Pick the direct thread or QD system that matches your barrel and you are set, without paying for a mount you'd just have to swap out.
FEATURES
- SNIPER3 suppression technology
- 3D-printed Grade 5 titanium (LPBF)
- Optimized for 338 ARC, 8.6 BLK (subsonic), and .338 Lapua Magnum (supersonic)
- 1,000 to 2,100 FPS optimized velocity window
- 1.375x24 HUB rear interface
- DLC (Diamond-Like Carbon) finish
- Sacrificial "waffle" erosion interface at blast chamber
- Weight: 15.5 ounces
- Length: 9.5"
- Diameter: 1.8"
WHAT'S INCLUDED
- CAT BBK suppressor
- Sticker pack
COMPATIBILITY
- HUB Compatible Mounts
- Direct Thread Mounts: Dead Air, SilencerCo, Energetic Armament, YHM
- SilencerCo ASR
- Plan-B by Q (HUB)
- Dead Air Key-Mo (HUB), Dead Air Xeno
- YHM QD Adapter
BARREL RESTRICTIONS
- 8" minimum: 338 ARC, 8.6 BLK
- 20" minimum: .338 Lapua Magnum
| Weight | 15.5oz |
|---|---|
| Manufacturer | CAT |
| Caliber | .338 Lapua Mag |
| Length | 9.5 |
| Diameter | 1.8" |
| Decibel Reduction / Output | Not Provided |
| Full Auto Rated | No |
| Mount | HUB/Bravo - 1.375x24 |
| Finish | DLC |
| Materials | Titanium |
| Can Be Disassembled | No |
| Warranty | https://specterscat.com/warranty-and-returns/ |