Availability: Out Of Stock
Made in U.S.A.
NOTE: There are two basic sizes of M4 Carbine receiver extensions (buffer tubes): mil-spec and commercial-spec. If you have a commercial-spec extension on your rifle, make sure to order the Commercial-Spec CTR. If you happen to have one of the uncommon military tubes with an extended slant-back, along with the Mil-Spec CTR you will also need to order the Extended Rubber Butt-Pad, 0.55" (sold separately).
* Friction lock performance may vary depending on the host receiver extension's dimensional tolerances.
** Specifications based on standard-length (flat-back) M4 Carbine receiver extension and may vary depending on tube manufacturer.