The KAK Industries A2 Birdcage flash hider is the old standard by which
modern muzzle devices are measured. Combining excellent flash
suppression and muzzle climb reduction with a minimal dust signature and
blast, the A2 is easily one of the best muzzle devices available on the
This 5.56 caliber birdcage is threaded for 1/2x28 barrels. Does NOT include crush washer.