B5 Systems Collapsible Precision Stock - The B5 Systems Collapsible Precision Stock (CPS), Long. Building upon the venerable cheek profile of the B5 Precision stock incorporates an adjustable cheekpiece and buttpad while fitting Mil-Spec carbine receiver extensions. Features internal tensioners, ambidextrous fixed and quick disconnect sling mounts, gross length of pull adjustment via pull down with lockout, underside M-LOK accessory mount, and color matched hardware. The CPS Long is optimized for side charging and rifles equipped with the LAW side folding adapter. Optimized for Use with Law Side Folding Adapters and Side Charging Platforms Cheek Weld and Buttpad with Precision Dials Adjustable up to 1/2in and 10 Internal Tensioners Color Matched Steel Hardware Gross Adjustment Pull Down Lever with Lockout Feature Fixed Sling Mounts and Steel Anti-rotational QD Mounts Cushioned Non-Slip Buttpad Mounting Slots for Accessory Cheekpiece Underside M-LOK Accessory Attachment Made of MIL-SPEC Materials and Finishes Fits MIL-SPEC Carbine Receiver Extensions (M4/A5/M110K) Manufacture Limited Lifetime Warranty