Ar-15 Ejection Port Cover Assembly

The AR-15 Ejection Port Cover Assembly from Sons of Liberty Gun Works is a purpose-built dust cover designed to seal the upper receiver's ejection port when the rifle is not in use or during storage and transport. This component serves both tactical and practical functions: it prevents environmental contamination—dirt, sand, debris, and moisture—from entering the bolt carrier group and chamber, while also reducing the risk of accidental discharge hazards during handling. Law enforcement and military personnel rely on ejection port covers to maintain firearm readiness and extend service life between cleaning cycles.

Constructed as a complete assembly kit, this ejection port cover features a spring-loaded or hinged mechanism that allows rapid deployment without removing any primary components. Sons of Liberty Gun Works manufactures this part to tight tolerances, ensuring consistent fit and reliable operation across standard AR-15 upper receivers. The assembly integrates seamlessly with mil-spec rails and does not interfere with iron sights, optics, or other common accessories mounted forward of the charging handle. The minimal weight addition—just 0.05 pounds—ensures no impact on overall rifle balance or handling characteristics.

This ejection port cover is ideal for shooters who store their AR-15 rifles between range sessions, field operations, or deployment cycles. It is particularly valuable for those who train in sandy, dusty, or wet environments where bolt carrier fouling accelerates wear and jams. Installation requires no gunsmithing or special tools—simply align the assembly with the ejection port opening and secure according to included instructions. Compatible with all AR-15 variants using standard mil-spec upper receivers, including carbines, rifle-length platforms, and piston-driven systems.