The Strike Industries SI-AR-UDC-E-308-01-FDE AR Ultimate Dust Cover elevates the functionality and aesthetics of your .308 rifle. This cover is expertly crafted from lightweight polymer for optimal durability. It is engineered to withstand corrosion, rust, and fading, ensuring long-lasting performance in any environment. Spring-loaded internal detent rod for easy installation and take-down. Constructed with lightweight durable polymer material. Will never corrode, rust, or fade. True Seal internal lip for superior sealing. Available for AR-15 and AR-10. Enhance your firearm's performance with the SI Ultimate Dust Cover for maximum reliability.