AR15 Lower Receiver Extension Buffer Tube - MIL SPEC
** Made in USA **
6 adjustable positions for attaching to an adjustable Mil-Spec buttstock stock.
Extended threads to make install very easy (castle nut can be moved right back / out of the way).
- Precisely CNC machined
- 6061-T6 Aluminum
Commercial size stocks are wider (1.17") and won't fit correctly.