Magpul PRS GEN3 Precision-Adjustable Stock for AR-15 & AR-10
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 and AR-10 pattern rifles with a rifle-length or A5 receiver extension. Not compatible with carbine buffer tubes.
Not sure it fits your rifle? Ask us before you order
The Magpul PRS GEN3 is a precision-adjustable rifle stock for AR-15 and AR-10 platform rifles, fitting a rifle-length or A5 receiver extension.
The precision stock by which gas guns are judged — the PRS GEN3 is bench-rest engineering for AR-15 and AR-10 platforms.
The Magpul PRS GEN3 (MAG672) is the full expression of the precision rifle stock concept: tool-less micro-adjustable length of pull and cheek height via precision click dials, a massively rigid chassis that gives the rear bag and shoulder a dead-stable interface, and geometry refined across three generations of competitive and professional use. Set your dimensions once and they hold — through recoil, transport and seasons.
GEN3 fits rifle-length and A5 receiver extensions across AR-15 and AR-10 patterns, wears a rubber buttpad on an adjustable-height plate, and provides the flat, bag-riding underside serious positional shooters expect. If the mission is smallest-possible groups from a semi-auto, this is the stock the conversation ends with.
Fits AR-15 and AR-10 pattern rifles that use a rifle-length or A5 receiver extension. It is not compatible with carbine buffer tubes, so if your rifle currently wears a collapsible carbine stock you will need to change the receiver extension and buffer to a rifle or A5 setup first. Install, dial in length of pull and cheek height behind your optic, and record the click settings.
| Platform | AR-15 & AR-10 |
|---|---|
| Fits | Rifle-length / A5 receiver extension |
| Finish | Black, Flat Dark Earth, Olive Drab Green, Stealth Gray |
| Adjustment | Tool-less length of pull & cheek height |
| Brand | Magpul Industries |
| MPN | MAG672-BLK · MAG672-FDE · MAG672-ODG · MAG672-GRY |
Build the rifle around the shot. Order the PRS GEN3 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 & AR-10 |
|---|---|
| Fits | Rifle-length / A5 receiver extension |
| Finish | Black, Flat Dark Earth, Olive Drab Green, Stealth Gray |
| Adjustment | Tool-less length of pull & cheek height |
| Brand | Magpul Industries |
| MPN | MAG672-BLK · MAG672-FDE · MAG672-ODG · MAG672-GRY |
| Category | Rifle Stock |
| Shipping weight | 1.0 kg |
| Barcode | 840815109594 |
£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.
The PRS GEN3 fits AR-15 and AR-10 pattern rifles that use a rifle-length or A5 receiver extension. It will not go onto a carbine buffer tube, so if your rifle currently wears a collapsible carbine stock you will need to change the receiver extension and buffer to a rifle or A5 setup first. Check what your rifle has before ordering, and get in touch if you are not sure.
It is a fixed-position stock designed to be set up once for a particular shooter and shooting position, then left alone. Both length of pull and cheek height adjust without tools, so you can dial in eye alignment behind a scope and repeat that position every time you mount the rifle. That fixed, solid platform is what makes it popular for bench, prone and precision work rather than fast carbine handling.
Length of pull and cheek height are both tool-less on the GEN3, so you can make changes on the firing point without digging out an Allen key. The usual approach is to set the cheek height for a natural head position behind your optic first, then adjust length of pull so the trigger falls comfortably under your finger. Once you have found your setting, note it down so you can return to it after cleaning or transport.
The GEN3 is offered in Black, Flat Dark Earth, Olive Drab Green and Stealth Gray. If the weight of a full precision stock is a concern, the <a href="/products/magpul-prs-lite-stock-ar15-ar10">PRS Lite</a> covers similar ground in a lighter package. You can compare the wider selection in <a href="/collections/precision-rifle-stocks">precision rifle stocks</a>.
Precision stocks go out 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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