Description
The B5 Systems Collapsible Precision Stock is built for shooters who want the length-of-pull and cheek weld control of a precision chassis without giving up compatibility with a standard Milspec carbine receiver extension. That combination is the core trade-off this stock addresses: dedicated precision stocks typically demand proprietary hardware, while this one drops onto the same buffer tube already on most AR-pattern rifles.
The cheekpiece and buttpad each adjust independently via precision dials, so a shooter can dial in vertical cheek height for a given optic without disturbing the length-of-pull setting, and vice versa. Gross length-of-pull changes are handled through a pull-down lever with a lockout, which keeps the stock from shifting position under recoil or during handling. Twelve internal tensioners control the feel of that adjustment travel and reduce play between the stock and tube — the kind of slop that shows up on standard collapsible stocks and becomes noticeable when shooting from a supported position.
Sling attachment is covered on both sides with fixed mounts and steel anti-rotational QD sockets, so neither a two-point nor a quick-detach setup requires adapters. An M-LOK interface on the underside adds a mounting point for accessories without adding bulk to the sides of the stock. The cushioned buttpad is designed to stay put against a shoulder rather than sliding during the shot.
Mounting slots accept the optional B5 Accessory Cheekpiece for shooters who want additional lateral support. The Medium length fully collapsed clears the M4 charging handle. All materials and finishes are Milspec, and the stock is manufactured in the USA.






