Description
The B5 Systems Enhanced SOPMOD stock is built for AR-15 shooters who want purpose-driven storage, reliable sling options, and a comfortable cheek weld without adding unnecessary bulk to a working carbine. It fits mil-spec carbine receiver extensions, so installation is straightforward on the vast majority of AR-15 and AR-308 platforms.
The design starts from the original SOPMOD pattern and adds features that address real limitations of simpler collapsible stocks. Dual water-resistant internal storage compartments give you discreet access to small essentials — batteries, a spare bolt, a tourniquet — without hanging anything off the outside of the rifle. A built-in holder for the M4 Multitasker tool keeps that specific tool retained and accessible rather than loose in a bag. The cushioned, non-slip buttpad improves shoulder contact during sustained shooting and reduces the tendency of the stock to shift position under recoil.
Sling attachment is handled by fixed mounts alongside steel anti-rotation QD sockets. The anti-rotation feature matters because standard QD sockets can walk under load, particularly with heavier slings or dynamic movement — the steel construction here resists that rotation mechanically rather than relying on friction alone. A sure-grip stock latch keeps the stock locked at your chosen length of pull without the play that worn latches introduce over time.
The Black Multicam finish uses color-matched steel hardware throughout, so the pattern reads consistently rather than breaking up with mismatched metal components. Polymer construction keeps weight down while meeting mil-spec material standards.






