Aim Sports ARDCA AR-15 M4 Dust Cover Mil-Spec Black 3.10"

The Aim Sports ARDCA dust cover provides essential protection for AR-15 and M4 rifle platforms against dirt, debris, and moisture infiltration. This mil-spec component maintains the ejection port seal when the rifle is not in use, extending operational lifespan and reducing maintenance requirements.

What Makes This Different

Unlike basic aftermarket covers that may warp or fail under stress, the ARDCA features precision-machined construction with proper spring tension for reliable closure. The black anodized finish matches standard military specifications and resists corrosion better than basic painted alternatives. Dimensional accuracy ensures proper fit without binding or interference with bolt carrier operation.

Key Features

• Mil-spec dimensions for guaranteed compatibility with AR-15/M4 upper receivers
• Black anodized aluminum construction resists corrosion and wear
• Spring-loaded mechanism provides positive closure and secure seal
• 3.10-inch overall length accommodates standard ejection port dimensions
• Drop-in installation requires no gunsmithing or special tools
• Ambidextrous operation works for left and right-handed shooters
• Lightweight design adds minimal weight to rifle configuration

Field testing demonstrates reliable function across temperature ranges from -20°F to 140°F without binding or failure. The cover automatically opens during firing cycle and closes when the bolt locks back, maintaining protection during transport and storage. Law enforcement agencies and competitive shooters rely on this component for consistent performance in dusty, sandy, or wet conditions where debris could compromise rifle function.

Technical Specs

• Overall Length: 3.10 inches
• Material: 6061-T6 aluminum alloy
• Finish: Type III hard anodized black
• Weight: Approximately 0.8 ounces
• Compatibility: AR-15, M4, and compatible upper receivers
• Spring: Stainless steel torsion spring
• Installation: Drop-in replacement for factory dust cover
• Country of Origin: USA

This dust cover represents a cost-effective upgrade that protects expensive rifle components from contamination. Professional armorers stock this part for routine maintenance and replacement schedules.