B5 Systems Collapsible Precision Stock Short AR-15 Milspec
B5 Systems
$218.50
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B5 Systems
B5 Systems Collapsible Precision Stock Short AR-15 Milspec
The B5 Systems Collapsible Precision Stock (CPS) Short brings military-grade ergonomics and precision adjustability to your mil-spec AR-15 carbine, delivering the refined cheek weld and length-of-pull customization serious shooters demand in a rugged, American-made package.
- Adjustable cheekpiece and buttpad tuned via precision machined dials
- Fits mil-spec carbine receiver extensions for broad AR-15 compatibility
- Gross length-of-pull adjustment with pull-down release and positive lockout
- 12 internal tensioners eliminate wobble and rattle on the buffer tube
- Underside M-LOK accessory slot for lights, monopods, or accessories
- Ambidextrous fixed sling mounts plus steel anti-rotational QD sling cups
Who This Is For
The B5 Systems CPS Short is built for precision-minded AR-15 shooters — competitors, hunters, and serious hobbyists — who need repeatable cheek weld and a shorter collapsed profile for compact builds or shooters with shorter length-of-pull preferences. It's equally at home on a designated marksman rifle as it is on a range carbine, and its M110 charging handle clearance when fully collapsed makes it an excellent choice for suppressed or recce-style setups.
Specifications
| Brand | B5 Systems |
|---|---|
| Model | Collapsible Precision Stock (CPS) Short |
| Buffer Tube Compatibility | Mil-Spec Carbine Receiver Extension |
| Length of Pull Adjustment | Gross adjustment via pull-down with lockout |
| Cheekpiece | Adjustable height via precision dial |
| Buttpad | Adjustable, no-slip cushioned pad |
| Internal Tensioners | 12 |
| Sling Mounts | Ambidextrous fixed + steel anti-rotational QD |
| Accessory Mount | Underside M-LOK slot |
| M110 CH Clearance | Yes (when fully collapsed) |
| Hardware | Color-matched machined steel |
| Country of Origin | USA |
Frequently Asked Questions
Will the B5 Systems CPS Short fit my existing AR-15 buffer tube?
Yes — the CPS Short is designed specifically for mil-spec carbine receiver extensions (buffer tubes). It is not compatible with commercial-spec buffer tubes, which have a slightly larger diameter and different taper. If you're unsure which spec your rifle uses, mil-spec tubes are typically made from aluminum with a consistent diameter, while commercial tubes taper toward the rear. Most factory and aftermarket AR-15s ship with mil-spec tubes, but it's always worth confirming before purchasing.
What is the difference between the CPS Short and the standard CPS?
The primary difference is the collapsed length profile. The CPS Short is designed to collapse further down the buffer tube, which is particularly useful for shooters with a shorter length-of-pull preference, those running compact or SBR configurations, or anyone who needs clearance for an M110-style extended charging handle. Both versions share the same adjustable cheekpiece, buttpad, M-LOK accessory slot, and sling mount features — the Short simply offers a more compact minimum length.
Can I mount a cheek riser or additional accessories to the CPS Short?
Absolutely. The CPS Short includes dedicated mounting slots for an accessory cheekpiece (sold separately by B5 Systems), allowing you to build up additional cheek height for use with night vision, magnified optics, or thermal devices. The underside M-LOK slot also lets you attach a rear monopod, sling loop, or other M-LOK-compatible accessories, making the stock highly adaptable for precision shooting or duty-oriented builds.
