B5 Systems Collapsible Precision Stock Medium FDE AR-15 Milspec
B5 Systems
$218.50
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B5 Systems
B5 Systems Collapsible Precision Stock Medium FDE AR-15 Milspec
The B5 Systems Collapsible Precision Stock (CPS) Medium in Flat Dark Earth delivers competition-grade ergonomics on a mil-spec carbine receiver extension, giving AR-15 shooters the adjustability of a precision rifle stock without sacrificing the compact profile of a collapsible design.
- Adjustable cheekpiece and buttpad dial in your perfect cheekweld and length of pull
- Fits standard mil-spec carbine receiver extensions for broad AR-15 compatibility
- 12 internal tensioners eliminate stock wobble for a solid, rattle-free feel
- Underside M-LOK mount accepts accessories without adding unnecessary bulk
- Ambidextrous fixed and steel anti-rotational QD sling mounts suit any carry style
- Fully collapsed profile clears the M4 charging handle with no interference
Who This Is For
The B5 Systems CPS Medium FDE is ideal for precision-minded AR-15 shooters — whether you're a competitive shooter dialing in for distance, a duty-focused operator needing repeatable cheekweld, or a serious recreational shooter who refuses to compromise on fit and ergonomics. If you've been frustrated by the one-size-fits-all feel of a standard carbine stock, the CPS was designed specifically for you.
Specifications
| Brand | B5 Systems |
|---|---|
| Model | Collapsible Precision Stock (CPS) Medium |
| Color | Flat Dark Earth (FDE) |
| Buffer Tube Compatibility | Mil-Spec Carbine Receiver Extension |
| Cheekpiece | Adjustable via precision dial |
| Buttpad | Adjustable, no-slip cushioned |
| Internal Tensioners | 12 |
| Sling Mounts | Ambidextrous fixed + steel anti-rotational QD |
| Accessory Mount | Underside M-LOK slot |
| Hardware | Color-matched machined steel |
| Charging Handle Clearance | Clears M4 charging handle when collapsed |
| Country of Origin | USA |
Frequently Asked Questions
Will the B5 Systems CPS Medium fit my mil-spec AR-15 buffer tube?
Yes. The CPS Medium is designed specifically for standard mil-spec carbine receiver extensions, which are found on the vast majority of AR-15 rifles and carbines. It is not compatible with commercial-spec buffer tubes, which have a slightly larger diameter. If you're unsure which tube your rifle has, mil-spec tubes are typically stamped or marked and have a slightly smaller outer diameter than commercial tubes.
What is the difference between the CPS Medium and other CPS size options?
B5 Systems offers the Collapsible Precision Stock in multiple sizes to accommodate different shooters and shooting positions. The Medium version is the most versatile fit for a wide range of adult shooters and is sized to provide optimal cheekweld height for standard AR-15 flat-top uppers with a conventional optic or iron sights. If you run a particularly high optic mount or have a taller comb preference, consider sizing up; smaller-framed shooters may prefer the standard size.
How do the precision dials on the cheekpiece and buttpad work?
The CPS features tool-free adjustment dials that let you raise or lower both the cheekpiece height and buttpad position independently. This allows you to fine-tune your cheekweld for consistent eye relief behind a scope and adjust your length of pull for a comfortable, repeatable shooting position. Once set, the dials lock securely in place so your settings stay put through recoil and field use.
