Surefire SFMB5561228 5.56 NATO Suppressor Adapter Muzzle Brake, 1/2"-28 TPI Stainless Steel

The Surefire SFMB5561228 5.56 NATO suppressor adapter muzzle brake threads onto your AR-15, M4, or M16 platform rifle and serves dual duty: it reduces recoil and muzzle rise during shooting, and it functions as a rock-solid mounting point for Surefire SOCOM Series suppressors. If you're running a modern tactical rifle or hunting with an AR platform and want to tame recoil without a permanent install, this 1/2"-28 TPI brake gives you a clean, reversible solution.

Built from US mill-certified, heat-treated stainless steel and finished with a Black Ionbond DLC coating, the SFMB5561228 is engineered to handle thousands of rounds and the extreme heat that comes with them. The design incorporates offset porting that diffuses muzzle blast to the sides—keeping concussive energy and gas away from your face and sight picture so you stay on target for faster follow-up shots. When paired with a SOCOM suppressor, multiple bearing surfaces lock the can down with superior alignment, and a labyrinth seal at the rear minimizes carbon intrusion into the indexing system, making suppressor removal easier after extended shooting sessions.

Surefire precision-machines this adapter to exact tolerances and inspects each unit for concentricity and alignment. The device includes blind pilot holes at the 3, 6, and 9 o'clock positions—useful if you want to fine-tune recoil characteristics with a hand drill or pin-and-weld the brake on a short-barreled rifle. Installation is non-permanent and requires no modifications to your rifle.

Key Features

• Offset porting reduces muzzle rise and felt recoil for improved shot-to-shot recovery
• Multiple bearing surfaces ensure superior suppressor alignment when used with SOCOM Series cans
• Labyrinth seal design minimizes carbon buildup in the suppressor indexing system
• Precision CNC-machined from US mill-certified heat-treated stainless steel
• Black Ionbond DLC coating resists corrosion and harsh field conditions
• Blind pilot holes allow for recoil tuning or pin-and-weld installation on short barrels
• Non-permanent thread-on installation—no modifications required

Specifications

Frequently Asked Questions

Will this adapter work with my AR-15?

Yes. The SFMB5561228 threads onto AR-15, M4, and M16 platforms with 1/2"-28 TPI barrel threads and is designed as a non-permanent installation requiring no modifications to your rifle.

Can I use this muzzle brake with a Surefire SOCOM suppressor?

Yes. The adapter functions as a mounting point for Surefire SOCOM Series suppressors, with multiple bearing surfaces engineered to ensure proper suppressor alignment and a labyrinth seal that reduces carbon buildup in the indexing system.

Can I pin-and-weld this brake to comply with local laws?

Yes. The SFMB5561228 includes a blind pilot hole at the 6 o'clock position that allows you to pin-and-weld the brake to your barrel on short-barreled rifles. A hand drill and appropriate bits are required.

What material is this brake made from?

The SFMB5561228 is precision CNC-machined from US mill-certified, heat-treated stainless steel and features a Black Ionbond DLC coating for corrosion resistance and durability in harsh field conditions.