10 Round Magazine Extension & Spring for 5.7 Pistol, www.cmmginc.com CMMG Inc. AR15 Rifles, Parts and Accessories. .22 LR Dedicated AR-15 Rifles, Dedicated AR 15 9mm Rifles and Uppers, Tactical Bacon

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10 Round Magazine Extension & Spring for 5.7 Pistol

CMMG 10 Round Magazine Extension for 5.7 Pistol

Part Number: FN-EXT