B5 Systems Collapsible Precision Stock, Long Black

The B5 Systems Collapsible Precision Stock (CPS), Long, is an AR-15 compatible collapsible stock designed to provide a repeatable cheekweld and adjustable length of pull for precision-oriented setups. It fits mil-spec carbine receiver extensions and includes internal tensioners and ambidextrous sling attachment points for versatile carry options. The long profile is optimized for side-charging rifles and for use with LAW side folding adapters. The stock features a polymer construction and is made in the USA.

Key Specifications

• The stock size is Long.
• The finish/color is Black.
• The construction material is Polymer.
• Designed to fit Milspec carbine receiver extensions.
• Includes an adjustable cheekpiece and buttpad with precision dials.
• Provides gross length-of-pull adjustment with pull-down lockout.
• Features internal tensioners for a secure fit on the tube.
• Offers ambidextrous fixed and quick-disconnect sling mounts.
• Includes an underside M-LOK accessory mount for attachments.
• The product is Made in the USA.

With a focus on adjustable ergonomics and durable, lightweight construction, this long-profile precision stock supports consistent cheekwelds and repeatable shoulder placement for accuracy-minded shooters. The integrated M-LOK provision and versatile sling mounting options make it adaptable to a range of modern AR configurations, including side-charging builds and folding-adapter setups. Its blend of modular adjustability and robust polymer design suits competitive, tactical, and precision-oriented users seeking a dependable stock solution.