Magpul RSA QD Rail Sling Attachment
Mix and match across the range: 2 items save 5%, 3 save 10%, 4 or more save 15% on your whole basket.
Clamps to any 1913 Picatinny rail section. Accepts industry-standard push-button QD swivels.
Not sure it fits your rifle? Ask us before you order
The Magpul RSA QD is a quick-detach sling mount that clamps to any MIL-STD 1913 Picatinny rail section.
A quick-detach sling point for any Picatinny rail — low-profile, over-engineered and ready in minutes.
The Magpul RSA QD (MAG337) bolts to any MIL-STD 1913 Picatinny rail section and provides a standard QD socket wherever your sling geometry needs it. Machined for a precise rail fit and finished in a hard-wearing black, it sits tight against the rail with minimal overhang — no rattle, no bulk, no snag points.
Sling attachment placement makes or breaks how a rifle carries and mounts. The RSA QD lets you put the front sling point exactly where it balances the rifle for your build and your body, rather than where the factory happened to leave a loop. Paired with any push-button QD swivel it gives positive, silent lock-up that shrugs off hard use.
Clamps to any 1913 Picatinny rail section — handguard rails, receiver rails or rail panels. You need enough clear rail for the clamp body, so plan around your existing lights, grips and rail covers; an M-LOK-only handguard would need a rail section adding first. Seat it against a rail slot so recoil cannot walk it forward, then click in any standard push-button QD swivel such as the Magpul QDM (MAG543).
| Type | QD sling attachment point |
|---|---|
| Finish | Black |
| Mount interface | 1913 Picatinny rail |
| Brand | Magpul Industries |
| MPN | MAG337 |
Put your sling exactly where it belongs. Order the RSA QD 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 Slings & Sling Mounts, AR-15 Parts & Accessories or browse all Magpul.
| Type | QD sling attachment point |
|---|---|
| Finish | Black |
| Mount interface | 1913 Picatinny rail |
| Brand | Magpul Industries |
| MPN | MAG337 |
| Category | Sling Mount |
| Shipping weight | 0.3 kg |
| Barcode | 873750008653 |
£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 clamps to any 1913 Picatinny rail section, so it can sit on a handguard rail, a rail panel or any other Picatinny surface you can spare. Once fitted it gives you an industry-standard push-button QD socket at that point. You will need enough clear rail for the clamp body, so plan around your existing lights, grips and rail covers.
It converts a length of Picatinny rail into a proper QD socket, which means the sling can be unclipped from the rifle in a second without unthreading anything. The low-profile body keeps it from catching on kit or fouling your support hand. If you would rather have a permanent loop with nothing to press, the fixed-loop RSA is the alternative.
It is a clamp-on rail mount, so ordinary hand tools are all that is involved; snug it down against the rail slot recoil lug so it cannot creep under recoil. It accepts industry-standard push-button QD swivels, such as the <a href="/products/magpul-qdm-quick-disconnect-sling-swivel-mag543">Magpul QDM swivel</a>. The socket is the standard pattern, so most QD sling ends on the market will seat in it.
There is a single black finish, so the choice is really about placement: most shooters put it on the support-hand side of the handguard at the point where the sling sits most comfortably. You will also need a QD swivel and a sling to complete the setup, which you can pick from <a href="/collections/magpul-rifle-slings-sling-mounts">Magpul slings and sling mounts</a>. If you are not sure your rail has room, measure the clear section before ordering.
This mount is dispatched from the United Kingdom with £5 tracked UK delivery in 7–10 business days and tracking comes through by email once it ships. If it turns out not to suit your rail, 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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