Strike Industries ARUDCE0122 Ultimate Dust Cover AR-15, M4, M16 Black Polymer 3.46″

The AR Ultimate Dust Cover features an adjustable detent set screw in order to compensate wear on the receiver and increase or decrease opening power. Compatible with AR-15/M16/M4 .223/5.56 and will fit Billet Uppers. Includes Dust Cover, spring and pin.