The Strike Industries AR-15 Dust Cover (brand part no. SI-AR-UDC-E-TX-223-BK) is a black polymer ejection port cover built for AR-15 platform rifles. It’s molded from high-density polymer, making it more durable and functional than a stock stamped-steel dust cover over the life of the rifle. The cover features an adjustable detent set screw that compensates for the wear a receiver picks up over years of cycling, keeping the cover snug instead of loose and rattling. It’s a simple, direct upgrade for anyone replacing a worn or damaged factory cover.

Key Specifications

• Molded from high-density polymer for added durability over stock covers.
• Features an adjustable detent set screw that compensates for wear on the receiver.
• Purpose-built for AR-15 platform rifles.
• Finished in black.
• Includes a reinforced hinge pin that extends through the cover for added strength.
• Uses an L-shaped spring for an easier installation than a standard coil spring.
• Features a modified True-Seal lip that helps seal the inside of the receiver from debris.

Frequently Asked Questions

What makes this more durable than a stock cover? It’s molded from high-density polymer rather than stamped steel, and the set screw keeps it snug as the receiver wears.

What does the set screw do? It compensates for wear on the receiver, so the cover doesn’t loosen and rattle over time.

Buy the Strike Industries AR-15 Dust Cover

Replace a worn or rattling dust cover with the Strike Industries AR-15 Dust Cover, built from high-density polymer for the long haul. Order it from our Lubbock, Texas gun shop for fast, direct shipping, and browse more rifle parts from the full Strike Industries lineup we carry.