Are you thinking about build a new AR-15 rifle or completing that lower you have had sitting around for months? Well then look no further that this receiver extension kit for your AR-15 lower. CMMG has created the perfect kit containing an AR-15 rifle receiver extension; end plate, carbine buffer and spring. This kit is designed to work correctly with both with standard 5.56mm NATO AR rifle builds.

Features and Specifications:
Manufacturer Number: 55CA6C7
High quality anodized aluminum
Matte Black

Includes:
Mil-spec receiver extension
Buffer
Buffer Spring
Castle Nut
End Plate

Fits:
Mil-spec AR-15 Carbine stocks

Note: This product is new and being closed out; sold "As Is" and is not returnable to Cheaper Than Dirt. Please contact the manufacturer for warranty and assistance.