This Buffer Tube/Receiver Extension kit is constructed from aircraft grade aluminum with rolled threading. The buffer tube has been hard coat anodized for maximum corrosion and wear resistance.
This assembly kit will fit on all Mil-Spec AR 15 lower receivers. It is also compatible with most AR 308/AR 10 rifles but requires a modified buffer and spring for proper operation.
Kit Includes:
Includes: castle nut, spring, carbine buffer and end plate
You also have the option of customizing the buffer weight to match your build.