B5 Systems Collapsible Precision Stock Short for AR-15
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Fits AR-15/M4 rifles with a Mil-Spec-diameter carbine receiver extension (buffer tube). Check your tube specification before ordering.
Not sure it fits your rifle? Ask us before you order
The B5 Systems Collapsible Precision Stock (Short) is an adjustable precision rifle stock for AR-15 and M4 rifles, fitting any Mil-Spec-diameter carbine receiver extension.
A precision stock that collapses — the CPS Short brings adjustable cheek and length of pull to fighting-carbine dimensions.
The B5 Systems Collapsible Precision Stock in Short configuration attacks the classic compromise between precision fit and carbine handling. Its precision-adjustable cheek riser sets your eye exactly behind the optic, the buttpad adjusts to fine-tune the shoulder interface, and the whole stock still collapses on a Mil-Spec carbine extension for storage and transport. The Short length keeps overall dimensions tight — ideal for shorter shooters, armour users and compact builds.
B5 Systems over-builds its adjustment hardware, and the CPS carries that through: rigid, repeatable lockup and locks that hold their settings through recoil and rough handling. For scoped gas guns that need to fit properly and pack small, the CPS Short is a rare piece of engineering.
Fits AR-15/M4 rifles running a Mil-Spec-diameter carbine receiver extension (buffer tube), replacing a standard collapsible stock on the existing tube — no change of buffer or spring is normally involved. Commercial-diameter tubes are a different size and will not take it, so check your tube specification before ordering. Once fitted, set cheek height behind your optic and adjust the buttpad; the settings stay put once locked.
| Platform | AR-15 / M4 |
|---|---|
| Fits | Mil-Spec carbine receiver extension |
| Type | Collapsible precision stock |
| Finish | Black, Flat Dark Earth, Coyote Brown |
| Length | Short |
| Adjustment | Precision cheek riser & buttpad |
| Brand | B5 Systems |
| MPN | CPS-1400 · CPS-1401 · CPS-1402 |
Precision that packs small. Order the CPS Short today — imported from the USA with all duties paid by us and dispatched tracked from the UK in 7–10 business days, with nothing to pay on delivery.
Explore more: Rifle & Shotgun Stocks, Precision Rifle Stocks, AR-15 Parts or browse all B5 Systems.
| Platform | AR-15 / M4 |
|---|---|
| Fits | Mil-Spec carbine receiver extension |
| Type | Collapsible precision stock |
| Finish | Black, Flat Dark Earth, Coyote Brown |
| Length | Short |
| Adjustment | Precision cheek riser & buttpad |
| Brand | B5 Systems |
| MPN | CPS-1400 · CPS-1401 · CPS-1402 |
| Category | Rifle Stock |
| Barcode | 814927022539 |
£5 tracked UK delivery on every order via Royal Mail Tracked 24. Our products are ordered in from the manufacturer rather than held in UK stock, so please allow 7 to 10 business days (Monday to Friday, excluding bank holidays) from the date of your order for it to reach you. Tracking details are emailed on dispatch. UK delivery only.
You have 30 days from receiving your order to cancel it for any reason, then 14 days to send it back unused and in its original packaging. Faulty, damaged or incorrect items are replaced or refunded and we cover reasonable return postage. Refunds go back to your original payment method within 14 days of receiving the return.
It fits AR-15/M4 rifles with a Mil-Spec-diameter carbine receiver extension, which is the same tube a standard collapsible stock uses. Commercial-diameter tubes are a different size and will not take it, so check your tube specification before ordering. If you cannot tell which you have, measure it or send us your rifle details.
The lengths refer to the stock body itself, which sets where the collapsed and extended positions fall relative to the receiver. The short version suits shooters who want a more compact overall length, run body armour, or have a shorter reach. If you shoot from the bench or prone with a longer hold, the <a href="/products/b5-systems-collapsible-precision-stock-medium-length">medium-length CPS</a> is usually the better pick.
The CPS has a precision cheek riser and an adjustable buttpad on top of the usual collapsible length positions, so you can get eye height right behind an optic and still fold the stock down for transport. That combination is what separates it from a plain carbine stock, which only offers length. Set the cheek height first so your head sits naturally, then work out the length that puts the trigger comfortably under your finger.
Short-length CPS stocks come in Black, Flat Dark Earth and Coyote Brown. Nothing extra is needed if you already have a Mil-Spec carbine tube, buffer and spring. If you are comparing options for a scoped build, <a href="/collections/precision-rifle-stocks">precision rifle stocks</a> gathers the alternatives together.
Stocks are dispatched from the United Kingdom with £5 tracked UK delivery in 7–10 business days, and you'll get tracking by email when it ships. If a part turns out to be the wrong fit, see our returns policy or <a href="/pages/contact">contact us</a> and we'll help sort it.
7 to 10 business days from the date of your order. Every order is sent Royal Mail Tracked for a flat £5 and you receive tracking details by email when it is dispatched.
Yes. We list only genuine parts and optics from the brands shown, ordered in from the manufacturer for your order.
Compatibility notes on this page come from the manufacturer. If you are unsure, email us with your make and model before ordering and we will check rather than guess.
Yes. Bundle & Save applies automatically in your basket: 5% off when you buy 2 items, 10% off at 3 items and 15% off at 4 or more. It works across the whole range, so you can mix and match, and there is no code to enter.
Yes — you have 30 days from delivery to cancel for any reason, as long as the item is unused and in its original packaging. See our returns policy for the details.
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