Shop › CMMG 9MM EJECTION PORT COVER KIT CMMG 9MM EJECTION PORT COVER KIT $15.95 CMMG 9MM Ejection Port Cover Kit, Includes Ejection Port, Rod, Brass Deflector, and Spring 22BA627 Quantity: Add To Cart Added! CMMG 9MM Ejection Port Cover Kit, Includes Ejection Port, Rod, Brass Deflector, and Spring 22BA627