This BCM M4 buffer tube kit contains all the necessary parts to mount your Mil-Spec dimension stock assembly to your 80 lower receiver.
- Receiver Extension (Buffer Tube) - Mil-Spec, 6 position (machined from 7075T6)
- Receiver End Plate
- Lock Nut (Castle) M4
- Action Spring, Carbine
- Buffer Assembly, Carbine Std
This kit is compatible with any stock designed to accept a mil-spec buffer tube.
Made in USA