Strike Industries Ultimate Dust Cover AR-15/M16/M4

Enhance your AR-15, M4, or M16 with the Strike Industries Ultimate Dust Cover. Crafted from durable flat dark earth polymer, this 3.46-inch dust cover features an adjustable detent set screw to compensate for wear on the receiver, allowing you to adjust the opening power to your preference. Compatible with .223/5.56 calibers and billet uppers, this capsule design dust cover includes everything you need for installation: dust cover, spring, and pin.