The SureFire SFMB-556-1/2-28 is a precision-engineered muzzle brake and suppressor adapter designed for M4, M16, and compatible firearms with 1/2-28 muzzle threads. Its patented Impulse Diffusion design helps reduce recoil impulse, muzzle rise, side blast, and rear-directed concussion, allowing the firearm to track more naturally and supporting faster shot-to-shot recovery. The adapter is compatible with SureFire SOCOM Series 5.56mm Fast-Attach suppressors for a secure and dependable mounting solution.
Precision machined from US mill-certified, heat-treated stainless steel bar stock, the SFMB-556-1/2-28 features high-precision single-point-cut threads for an optimized thread interface. Its black Ionbond DLC finish provides durable protection against harsh environmental conditions while helping simplify cleaning after demanding use. The robust stainless steel construction is suited for reliable service on compatible 5.56mm platforms.
A rear labyrinth seal helps minimize carbon buildup in the indexing system and makes suppressor removal easier after extended firing. With its combination of recoil control, durable materials, protective coating, and suppressor-mounting capability, the SureFire SFMB-556-1/2-28 provides a practical upgrade for shooters seeking improved firearm control and Fast-Attach compatibility. Professional installation and verification of thread and firearm compatibility are recommended.
Features:
- Finish: Black Ionbond DLC coating
- Type: Muzzle brake and suppressor adapter
- Model: M4/M16 and compatible variants
- Compatibility: SureFire SOCOM Series 5.56mm Fast-Attach suppressors
- Material: Heat-treated stainless steel
- Thread Pattern: 1/2-28
- Caliber: 5.56mm
- Design: Patented Impulse Diffusion system
- Seal: Rear labyrinth seal helps reduce carbon buildup
- Part Number: SFMB5561228
