SureFire ProComp 556 Muzzle Brake — 5.56, 1/2-28

The SureFire ProComp 556 is a standalone muzzle brake engineered for rifles with 1/2-28 muzzle threads, including M4/M16 and AR-15 variants. Its Impulse Diffusion porting is designed to reduce recoil impulse and muzzle rise so the rifle tracks straight back for faster follow-up shots. Precision machined from U.S. mill-certified steel and finished in black nitride/Melonite, the ProComp is built for durability in demanding environments. Note that this model is not intended to serve as a mount or adapter for SureFire SOCOM/fast-attach suppressors.

Key Specifications

• The brand is SureFire.
• The model is ProComp 556.
• Designed for .223 Rem / 5.56 NATO chamberings as listed.
• The thread pattern is 1/2-28 tpi.
• Constructed from steel machined from U.S. mill-certified bar stock.
• The finish is listed as black nitride / Melonite.
• Features SureFire’s patented design that minimizes side blast and rear-directed concussion.
• Includes a blind pilot hole at the 9 o’clock position for recoil tuning.
• Intended as a standalone muzzle brake and does not serve as a mount/adapter for SureFire fast-attach suppressors.

The ProComp 556 combines precision machining and SureFire’s proven porting geometry to deliver repeatable, controllable recoil characteristics for range use, training, and tactical-style shooting applications. Its durable finish and stout steel construction provide long service life and dependable performance under regular use.