SOLGW MIL-SPEC Port Door Cover Kit – AR-15/M16/M4

The Sons of Liberty Gun Works MIL-SPEC Port Door Cover Kit is a direct replacement ejection port cover assembly for AR-15, M16, and M4 pattern rifles. This kit addresses worn, broken, or missing port door covers that can allow debris and moisture into the upper receiver. Installing a functional port door maintains the rifle's dust and moisture resistance, particularly important for rifles used in field conditions or extended outdoor storage.

Manufactured to military specifications, this kit includes the port door cover, C-clip, spring rod, and spring pin required for a complete installation. The cover is constructed from mil-spec steel with a black oxide finish. Installation is straightforward for users with basic armorer skills and requires no gunsmithing—only a punch and hammer are needed to drive the spring pin. The kit fits all mil-spec AR-15 upper receivers.

• Part Type: Ejection Port Door Cover Assembly
• Compatible Firearms: AR-15, M16, M4 (mil-spec upper receivers)
• Material: Mil-spec steel
• Finish: Black oxide
• Installation: Drop-in (basic tools required)
• Includes: Port door cover, C-clip, spring rod, spring pin