BCM A2 Flash Hider Black Phosphate 4150 Steel with 1/2"-28 tpi Threads for 5.56x45mm NATO M4 Platform & M16 Platform A2X

When mounted in accordance with BATF specifications for a permanent installation, this A2-pattern flash suppressor will bring a 14½" barrel up to a civilian-legal (non-NFA) 16.1" length. Comes with a pre-drilled hole and pin for permanently pinning to the barrel. Fits standard AR-15/M16 muzzle threads. Installation should be done by a qualified gunsmith familiar with BATF regulations.