Are you thinking about build a new AR-15 pistol? Well you are going to need to keep that lower receiver pistol compliant with this pistol receiver extension kit. CMMG has created the perfect kit containing an AR-15 pistol receiver extension; ambidextrous sling end plate, carbine buffer and spring. This kit is designed to work correctly with both .300 AAC blackout and 5.56mm NATO AR pistol builds.
· Designed for either 300 AAC Blackout or 5.56 Pistol Builds
· Includes Ambidextrous Sling End Plate
· Carbine Buffer and Spring