The Strike Ultimate .308 Dust Cover in Black Polymer is a durable and innovative solution for your AR platform. Designed with an adjustable detent set screw it allows you to fine-tune the tension to compensate for receiver wear ensuring optimal performance over time. This advanced dust cover comes complete with a spring and pin for easy installation. Crafted from lightweight yet sturdy polymer it delivers reliability without adding unnecessary weight. With a sleek black finish and precision engineering this dust cover is the perfect upgrade for your .308 rifle.