CMMG 9MM Ejection Port Cover Kit, Includes Ejection Port, Rod, Brass Deflector, and Spring 22BA627

Ideal for 9mm or .22LR builds, this drop in ejection port cover kit comes with a steel cover, pin, spring, and polymer gas deflector. Deflector is intended to keep gas and residue out of the shooter's face, using it as a brass deflector on anything larger than .22LR can result in damage. Cover comes with detent and detent spring installed.