Description The Dirty Bird .30 5/8-24 A2 Birdcage Flash Hider is the classic A2 flash hider design but refined in key areas. It’s clean machining and jet black nitride finish sets it apart from the competition. It includes a crush washer. - 5/8×24 Threads - Accommodates .30 cal projectiles - Some examples include .308, 6.5 Creedmoor, 7.62×39, 6.5 Grendel, 6.8 SPC, 300 Blackout and any other projectile .308″ or smaller. - Minimizes flash signature - Reduces muzzle rise - Black Nitride Finish - Includes crush washer - Lifetime Warranty Weight 2.992 oz UPC 810084371732