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 Add To Cart Added! CMMG 9MM Ejection Port Cover Kit, Includes Ejection Port, Rod, Brass Deflector, and Spring 22BA627