B5 Systems Collapsible Precision Stock, Black, Medium

The B5 Systems Collapsible Precision Stock (brand part no. CPS-1304) in black, medium size, is a mil-spec-compatible AR carbine stock built for shooters who want a dialed-in cheek weld without sacrificing a compact collapsed profile. Ten internal tensioners let the cheekpiece and buttpad be adjusted with precision dials for a repeatable fit, and the medium cheekpiece is sized to clear the AR-15 charging handle when the stock is fully collapsed. Color-matched steel hardware, ambidextrous sling mounts, and an underside M-LOK accessory mount round out a stock built for duty and precision rifles running M4, A5, or M110K receiver extensions.

Key Specifications

• Features 10 internal tensioners for a precisely adjustable cheekpiece and buttpad fit.
• Cheekpiece is sized to clear the AR-15 charging handle when fully collapsed.
• Includes gross length-of-pull adjustment via a pull-down lever with a lockout feature.
• Adds an underside M-LOK accessory mount.
• Uses color-matched steel hardware throughout.
• Provides ambidextrous fixed sling mounts and steel anti-rotational QD mounts.
• Fitted with a cushioned, non-slip buttpad.
• Includes mounting slots for an accessory cheekpiece.
• Fits mil-spec carbine receiver extensions, including M4, A5, and M110K tubes.

Frequently Asked Questions

Will the cheekpiece interfere with my charging handle? No, the medium cheekpiece is specifically sized to clear the AR-15 charging handle when the stock is fully collapsed.

Can I mount accessories on the stock? Yes, it includes an underside M-LOK accessory mount and mounting slots for an accessory cheekpiece.

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

Buy the B5 Systems Collapsible Precision Stock

Ten internal tensioners mean this stock adjusts to the shooter, not the other way around. Order the black, medium CPS from B5 Systems through our Lubbock, Texas gun shop for fast, direct shipping, and browse more AR15 stocks, forends, and forearms to finish your build.