The Commercial-Spec Magpul STR (Storage/Type Restricted) Carbine Stock is a drop-in replacement buttstock for AR15/M4 carbines using Commercial-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" rubber butt-pad which provides positive shoulder purchase to prevent slippage even with body armor or modular gear.
Made in the USA.
MULTI-ROLE AR STOCK Mounts on Com-Spec sized carbine receiver extension tube (not included) from manufacturers such as Bushmaster, DPMS, Olympic, and others (please see the note below).
WATER-RESISTANT STORAGE Two water-resistant battery storage tubes located on the left and right sides. Each tube will store up to two (2) CR123A lithium or AA batteries. Tubes are accessible from the rear in any stock position via a hand-removable rubber plug .