The Magpul RSA is a steel fixed-loop sling mount that clamps to any MIL-STD 1913 Picatinny rail section.
The Magpul RSA (MAG502) is a rugged, steel-bodied sling attachment that clamps to any MIL-STD 1913 Picatinny rail and presents a fixed loop compatible with both snap-hook slings and clip-in swivels, including the Magpul Paraclip. Where polymer sling points flex and aluminum loops wear oval, the RSA's steel construction takes years of loaded carry without complaint.
Its genius is its simplicity: no bearings, no buttons, nothing to fail. Mount it to a top, side or lower rail section to set the sling angle that suits your carry — the loop's geometry keeps webbing and hooks captive and quiet. For service rifles, trainers and any gun that gets slung more than it gets shot, the RSA is the fit-and-forget answer.
Key Features
- All-steel construction: genuinely hard-use rated
- Universal loop interface: takes hooks, loops and Paraclip slings
- Zero moving parts: nothing to wear, jam or release accidentally
- Mounts to any 1913 rail: set your sling angle precisely
Compatibility & Fitment
Clamps to any 1913 Picatinny rail section, so a handguard rail or a short rail panel is all it needs — leave enough clear rail for the clamp body once your lights and covers are accounted for. An M-LOK-only handguard would need a rail section added first. It takes looped slings, snap hooks and QD swivel adapters, and pairs naturally with the Magpul MS3 GEN2's Paraclip. Seat it against a rail slot so recoil cannot walk it forward.
Technical Specifications
Type | Fixed-loop sling attachment |
Material | Steel |
Mount Interface | 1913 Picatinny rail |
US Shipping & Support
Shipped from D&R Sports Center in the USA with fast, tracked delivery. Questions on fit, mounting or which model suits your setup? Our team is glad to help before and after your purchase.
Frequently Asked Questions
What does the RSA clamp onto?
It clamps to any 1913 Picatinny rail section, so a handguard rail or a short rail panel is all it needs. Leave enough clear rail for the clamp body once your lights and covers are accounted for. It is a rail attachment only, so an M-LOK-only handguard would need a rail section added first.
What kind of sling ends will it take?
The RSA is a fixed-loop attachment, so it will take looped slings, snap hooks and QD swivel adapters. That makes it a useful choice if you run more than one sling with different end hardware. If you want a true push-button socket instead, the RSA QD version is the one to look at.
How durable is it and what does fitting involve?
The MAG502 is steel, so it is intended to take the loads a sling puts through a single point. It clamps on with ordinary hand tools; seat it against a rail slot so recoil cannot walk it forward, and check the fastener again after a few outings. There is nothing to service beyond keeping it clean and the screw tight.
Do I need anything else to use it?
Just a sling that can attach to a fixed loop, or a snap hook or adapter if your sling ends in a QD swivel. It is supplied in a single finish, so the decision is mainly where on the rail to mount it.
