Mil-spec carbine buffer tube (receiver extension) for the AR-15 — CNC-machined in the USA from 6061-T6 aluminum and hard-anodized. The six-position design covers the full mil-spec length-of-pull adjustment range with a compatible carbine stock.
Specs & features:
Compatibility: Mil-spec and commercial-spec tubes are NOT interchangeable — commercial-spec carbine stocks will not lock onto a mil-spec tube and vice-versa. Verify your stock spec before ordering. This is the buffer tube only — buffer, recoil spring, castle nut, and end plate are sold separately or as part of a full buffer tube kit.
