Magpul MAG540-BLK Quick Detach Sling Swivel 1.25" Push Button for AR-15/M16/M4 - Black Manganese Phosphate

The Magpul MAG540-BLK quick detach sling swivel is a push-button QD connection point built for riflemen who need fast, reliable sling attachment without fumbling. This swivel accommodates standard 1.25-inch webbing and connects directly to QD sling attachment points found on most modern AR-15, M16, and M4 platforms. Built from steel with a manganese-phosphate finish, it delivers the durability you'd expect from Magpul—corrosion resistance and a low-profile, tactical look that pairs seamlessly with your rifle's existing hardware.

The push-button mechanism is intuitive: press to detach, release to lock. That simplicity matters when you're transitioning between shooting positions, stowing your rifle in a vehicle, or adapting your carry method on the fly. Whether you're running a dedicated two-point sling with the MS1 or converting between one- and two-point configurations using the MS4 adapter, this swivel serves as the anchor point. It's manufactured in the USA and represents Magpul's no-nonsense approach to rifle accessories—function first, frills nowhere.

If you're building out a rifle sling system or upgrading from older fixed studs, the MAG540-BLK gives you a durable, field-proven attachment point that works with virtually any quality sling designed for QD compatibility. It's a small component with outsized practical value for hunters, tactical shooters, and anyone who runs a two-point system.

Key Features

• Push-button quick-detach mechanism for fast sling connect/disconnect
• Accepts 1.25-inch webbing slings
• Compatible with standard AR-15/M16/M4 QD sling attachment points
• Manganese-phosphate finished steel for corrosion resistance
• Made in U.S.A.
• Works with Magpul MS1 slings and MS4 adapters for one- or two-point configurations

Specifications

Frequently Asked Questions

Will this QD swivel fit my AR-15 or M4?

Yes, the MAG540-BLK is designed for standard QD sling attachment points found on AR-15, M16, and M4 platforms. Confirm your rifle has a QD point before purchase.

What slings work with this quick detach swivel?

The swivel accepts any sling designed for 1.25-inch webbing and QD attachment. Magpul MS1 slings and MS4 adapters are directly compatible and pair well with this swivel for two-point or convertible one- to two-point sling setups.

Can I use this for both one-point and two-point sling configurations?

This swivel itself is a connection point. For true one-point to two-point conversion, you'd pair it with a compatible adapter like the Magpul MS4. On its own, it serves as an anchor for a two-point sling.

How does the push-button quick detach mechanism work?

Press the button to unlock and detach the sling. Release the button and the sling locks in place. It's a simple, intuitive design that allows you to quickly remove or attach your sling in the field.