Whether you’re assembling a BCM lower parts kit to complete a stripped lower or upgrading to a carbine buffer tube for your current rifle, this kit provides everything you need. This kit contains all the necessary parts to mount your Mil-Spec dimension stock assembly to your lower receiver. Receiver Extension – Mil-Spec, 6 position (machined from 7075T6) Receiver End Plate Lock Nut (Castle) M4 Carbine Action Spring Carbine Buffer Assembly This kit is compatible with the plastic stocks from; BCM®, VLTOR, LMT, Magpul® CTR-M, Stag Arms, Colt Made in the USA.
