The Magpul STR (Storage/Type Restricted) Carbine Stock – Mil-Spec is a drop-in replacement buttstock for AR15/M4 carbines using Mil-Spec sized receiver extension tubes. A storage-capable version of the CTR®, the STR has improved cheek weld and two water resistant battery tubes on a compact, reinforced polymer A-frame design.
A shielded operation lever and supplemental friction locking system prevent accidental operation and minimize excessive stock movement for enhanced weapon stability and accuracy.* The STR incorporates two integral sling loops, a reversible push-button QD sling mount, and a replaceable 0.30" thick rubber butt-pad which provides positive shoulder purchase to prevent slippage even with body armor or modular gear.
Made in the USA.
Magpul STR Carbine Stock – Mil-Spec
Platform - AR10, AR15, M4, M16, M110, SR25
Compatibility - Mil-Spec sized carbine receiver extension tube (not included) from manufacturers such as Colt, Armalite, S&W, LMT, and others
LOP, M4 Collapsed - ~10.9 in.
LOP, M4 Extended - ~14.2 in.
LOP Adjustment Range - 3.3 in.
Length, max - 7.3 in.
Weight - 12.3 oz.
Weight, w/ receiver extension - 16.3 oz.
Width, max - 2.6 in.
Other Specs - * 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.
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 STR.
