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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.

Features and Specifications:
Manufacturer Number: 55CA65A

Includes:
CMMG pistol receiver extension
Ambidextrous sling and endplate
Carbine buffer and Spring
Black

Fits:
.300 AAC Blackout or 5.56mm NATO pistol builds