The B5 Systems Collapsible Precision Stock (CPS) Medium is an OD Green, Mil-Spec-compatible AR stock built around an adjustable cheekpiece and buttpad for a precise, repeatable cheek weld (brand part no. CPS-1308). B5 Systems fits it with 10 internal tensioners to eliminate play on a Mil-Spec carbine receiver extension, then adds steel anti-rotational QD sling mounts, fixed sling loops, and an underside M-Lok slot for a monopod or accessory. A gross adjustment pull-down lever with a lockout feature speeds up length-of-pull changes, and fully collapsed the stock clears the M4 charging handle. At 20.65 ounces and made in the USA, it’s a serious upgrade for shooters who want fine-tuned fit without losing Mil-Spec compatibility.

Key Specifications

• Adjustable cheekpiece and buttpad use precision dials for fine-tuned fit.
• 10 internal tensioners eliminate play on a Mil-Spec receiver extension.
• Steel anti-rotational QD sling mounts plus fixed sling loops.
• No-slip cushioned buttpad improves shoulder purchase.
• Gross adjustment pull-down lever with a lockout feature for quick length-of-pull changes.
• Underside M-Lok slot for mounting a monopod or accessory.
• Fits Mil-Spec carbine receiver extensions, including M4, A5, and M110K patterns.
• Fully collapsed, the stock clears the M4 charging handle.
• Weighs 20.65 ounces with an 8.5-inch length, 2.00-inch width, and 4.35-inch height; made in the USA.

Frequently Asked Questions

Will this stock clear the charging handle when collapsed? Yes, fully collapsed it clears the M4 charging handle.

How much does this stock weigh? 20.65 ounces.

What receiver extensions does it fit? Mil-Spec carbine receiver extensions, including M4, A5, and M110K patterns.

Buy the B5 Systems Precision Stock Collapsible, OD Green

Order this Precision Stock from our Lubbock, Texas gun shop and add fine-tuned, Mil-Spec-compatible adjustability to your AR build. Browse our full AR15 stocks, forends, and forearms lineup for more colors. Ships fast from a Lubbock, TX gun shop.