The Barrett AM338 muzzle brake adapter mount is the essential connector between your Barrett rifle and an AM338 suppressor system. If you're running a modern suppressor setup on a large-caliber Barrett platform, this adapter ensures your suppressor threads properly and seats securely on the muzzle. Built from hardened carbon steel with .75x24 threads, it's engineered to handle the pressures and recoil of precision rifle shooting without compromise.
Barrett designed this adapter to work specifically with their AM338 suppressor line, giving you a reliable, no-guesswork fit. Whether you're shooting long-range precision matches, hunting big game, or working from a precision rifle platform, a properly threaded muzzle adapter is foundational to suppressor performance and safety. This mount handles the job straightforwardly—no welding, no special tools, just solid steel doing what it's meant to do.
One important note: this adapter is not rated for full-auto fire. If you're building or running a semi-auto precision rifle setup, this is the muzzle solution Barrett engineered for the job. Keep it in your parts kit as a backup or upgrade to any AM338 suppressor-ready rifle.
| Material | Hardened Carbon Steel |
| Thread Pitch | .75x24 |
| Finish | Black |
| Auto Rating | Semi-auto only (not full-auto rated) |
Yes. The Barrett AM338 muzzle brake adapter mount is required for use with the Barrett AM338 adapter mount suppressor. It's specifically engineered for that system.
This adapter features .75x24 threads, which is the thread pitch required for AM338 suppressor compatibility.
No. This adapter is not rated for full-auto fire and is designed for semi-auto precision rifle applications only.
The adapter is manufactured from hardened carbon steel, providing the durability and strength needed to handle suppressor systems on large-caliber rifles.
Barnett Outdoors
AB SUPPRESSOR
Operators Suppressors
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