The SureFire ProComp 556 muzzle brake has a blind pilot hole at the 3 and 9 oclock position to enable fine-tuning of recoil characteristics for individual shooting styles or ammunition characteristics.

Each ProComp 556 muzzle brake is covered by SureFires No-Hassle Promise. 

Features:

• Offset porting greatly reduces recoil impulse and muzzle rise so the weapon tracks straight back to keep you on target for faster shot-to-shot recovery
• Precision machined from US mill-certified steel bar stock
• High-precision barrel threads for optimum thread interface
• Pilot holes for tuning of muzzle brake and to pin-and-weld on short-barreled rifles
• Black Melonite coating provides maximum protection against harsh environmental conditions
• Installation requires no permanent modifications for M4 / M16 / AR15-type weapons

Length: 2.5"
Compatibility: AR15 series riflkes chambered in 5.56 / .223 with a 1/2-28 threads
Material: Steel

Manufacturer: SureFire