Magpul MS1 MS4 Adapter (MAG519) — converts an MS1 sling into a convertible one-point/two-point MS4-style sling using a heavy-duty push-button QD swivel and steel QD D-ring.
$65.95
Available on back-order
The Magpul MS1 MS4 Adapter turns the two-point MS1 sling into a convertible one-point or two-point QD sling. Its corrosion-resistant precision-cast steel QD D-ring (QPQ salt-bath nitride finish) and heavy-duty push-button QD swivel (manganese-phosphate finish) let the sling move between configurations one-handed without tangling. At the rear it fits push-button QD sockets on receivers, end plates and buttstocks for one-point use; at the front it works with an optional QD sling swivel, Magpul RSA-QD and Forward Sling Mounts, and most standard push-button QD sockets for two-point use. Webbing is 1.25 in nylon with Near Infrared (NIR) treatment. Made in the USA and 100 % Berry Amendment compliant.
Do I need an MS1 sling to use this adapter?
Yes — MAG519 converts the MS1 sling; it is not a complete sling.
How does MAG519 differ from MAG516?
MAG519 uses push-button QD hardware (MS4 style); MAG516 uses Paraclips (MS3 style).
What QD mounts does it fit?
Push-button QD sockets such as the Magpul ASAP QD end plate, QD-equipped stocks, and forward mounts like the RSA QD.
Specifications from Magpul (magpul.com).
Firearm parts and accessories are supplied by 3 Gun Tactical, Licensed Firearms Dealer 50001578, Tingalpa QLD. Check your state’s firearm-parts and magazine rules before ordering.
The Magpul MS1 MS4 Adapter turns the two-point MS1 sling into a convertible one-point or two-point QD sling. Its corrosion-resistant precision-cast steel QD D-ring (QPQ salt-bath nitride finish) and heavy-duty push-button QD swivel (manganese-phosphate finish) let the sling move between configurations one-handed without tangling. At the rear it fits push-button QD sockets on receivers, end plates and buttstocks for one-point use; at the front it works with an optional QD sling swivel, Magpul RSA-QD and Forward Sling Mounts, and most standard push-button QD sockets for two-point use. Webbing is 1.25 in nylon with Near Infrared (NIR) treatment. Made in the USA and 100 % Berry Amendment compliant.
Do I need an MS1 sling to use this adapter?
Yes — MAG519 converts the MS1 sling; it is not a complete sling.
How does MAG519 differ from MAG516?
MAG519 uses push-button QD hardware (MS4 style); MAG516 uses Paraclips (MS3 style).
What QD mounts does it fit?
Push-button QD sockets such as the Magpul ASAP QD end plate, QD-equipped stocks, and forward mounts like the RSA QD.
Specifications from Magpul (magpul.com).
Firearm parts and accessories are supplied by 3 Gun Tactical, Licensed Firearms Dealer 50001578, Tingalpa QLD. Check your state’s firearm-parts and magazine rules before ordering.
| Brand | Magpul |
|---|---|
| Model | MS1 MS4 Adapter |
| Magpul code | MAG519 |
| Colour | Black |
| Function | Converts MS1 sling to one-point / two-point QD |
| Hardware | Cast steel QD D-ring (QPQ nitride); push-button QD swivel (manganese phosphate) |
| Webbing | 1.25 in nylon, NIR treated |
| Attachment | Push-button QD sockets |
| Country of origin | USA (Berry compliant) |
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