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

Enhance your firearm with the Strike Industries Ultimate Dust Cover, designed for AR-15, M4, and M16 rifles. Made from durable black polymer, this 3.46" dust cover features an adjustable detent set screw to compensate for receiver wear and adjust opening power. It fits .223/5.56 calibers and is compatible with Billet Uppers. The package includes the dust cover, spring, and pin, offering a complete solution for maintaining your firearm's performance.