Magpul UBR GEN2 Collapsible Stock for AR-15/M4 & AR-10/SR25
Mix and match across the range: 2 items save 5%, 3 save 10%, 4 or more save 15% on your whole basket.
Fits AR-15/M4 and AR-10/SR25 pattern rifles. Supplied as a complete stock system — see Magpul documentation for buffer and spring compatibility.
Not sure it fits your rifle? Ask us before you order
The Magpul UBR GEN2 is a collapsible rifle stock for AR-15/M4 and AR-10/SR25 rifles, supplied as a complete system with its own receiver extension.
The stock that refuses to compromise — the UBR GEN2 collapses like a carbine stock and shoots like a fixed one.
The Magpul UBR GEN2 (MAG482) — Utility/Battle Rifle — solves the collapsible stock's oldest flaw. Its cheek weld riser stays fixed relative to your face while the butt extends and retracts beneath it, so every length-of-pull setting delivers exactly the same head position and sight picture. Combined with a chassis engineered to near-zero play, the UBR gives hard-recoiling AR-10/SR25 builds and duty AR-15s a stock with genuine fixed-stock integrity.
Storage is built into the butt, the rubber pad plants firmly, and the structure tolerates abuse — buttstrokes included — that would destroy lighter designs. It is the heaviest-duty collapsible stock Magpul makes, and it feels like it.
Fits AR-15/M4 and AR-10/SR25 pattern rifles. It is supplied as a complete stock system with its own receiver extension, so it installs in place of your existing buffer tube assembly rather than sliding onto it — check Magpul's documentation for buffer and spring compatibility on your build. Allow a little more bench time than a slide-on stock; the result justifies it.
| Platform | AR-15/M4 & AR-10/SR25 |
|---|---|
| Fits | Supplied with its own receiver extension |
| Type | Collapsible stock with constant cheek weld |
| Material | Polymer & aluminium |
| Finish | Black, Flat Dark Earth, Olive Drab Green, Stealth Gray |
| Brand | Magpul Industries |
| MPN | MAG482-BLK · MAG482-FDE · MAG482-ODG · MAG482-GRY |
Fixed-stock shooting, carbine-stock packing. Order the UBR GEN2 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 Magpul.
| Platform | AR-15/M4 & AR-10/SR25 |
|---|---|
| Fits | Supplied with its own receiver extension |
| Type | Collapsible stock with constant cheek weld |
| Material | Polymer & aluminium |
| Finish | Black, Flat Dark Earth, Olive Drab Green, Stealth Gray |
| Brand | Magpul Industries |
| MPN | MAG482-BLK · MAG482-FDE · MAG482-ODG · MAG482-GRY |
| Category | Rifle Stock |
| Shipping weight | 2.0 kg |
| Barcode | 840815100775 |
£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's made for AR-15/M4 and AR-10/SR25 pattern rifles and is supplied as a complete stock system rather than a stock alone. Because it's a system, buffer and spring compatibility matters, so check Magpul's documentation for your build before ordering. If you're working from an existing rifle rather than a fresh build, <a href="/pages/contact">contact us</a> with the details and we'll go through it.
On most collapsible stocks the comb moves with the stock, so your cheek position changes as you shorten or extend the length of pull. The UBR GEN2 keeps the cheek piece in the same place while the length adjusts around it, so your eye stays at the same height relative to the sights. That's worth having if you shoot in body armour or heavy clothing and need to change length often.
It uses a combination of polymer and aluminium, which is why it feels more substantial than a plain polymer carbine stock. That construction is aimed at rigidity, so the stock resists flex when it's loaded against the shoulder or used to steady the rifle. It sits at the heavier end of the range as a result.
Black, Flat Dark Earth, Olive Drab Green and Stealth Gray are offered. It's the choice for someone who wants the sturdiest collapsible option and is willing to accept the weight and the system-level fitting; if you want light and simple, look at the lighter carbine stocks in <a href="/collections/magpul-ar-15-stocks">Magpul AR-15 stocks</a>. Prices across the stock range vary considerably, and this sits toward the top of it.
This one is dispatched from the United Kingdom with £5 tracked UK delivery in 7–10 business days, and tracking is emailed at dispatch. If a part turns out to be the wrong fit, see our returns policy or get in touch 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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