Magpul MAG519-COY MS1/MS4 Adapter - Coyote Melonite Steel & Nylon Webbing

The Magpul MAG519-COY MS1/MS4 Adapter is a versatile sling component built to transform your rifle setup between one and two-point configurations on demand. Whether you're transitioning from a tactical range session to mobile hunting or simply need to adjust your carry system mid-mission, this adapter pairs with the MS1 sling and optional Paraclip to give you genuine flexibility without the weight or complication.

Built tough for field work, the adapter combines manganese-phosphate finished steel hardware with reinforced polymer components and custom 1.25-inch nylon webbing. The coyote-colored webbing carries Near Infrared (NIR) treatment to help reduce your thermal signature—a thoughtful detail for hunters and operators who care about concealment. All materials are engineered for durability and comfort: the webbing resists wear and chafing, while the snag-free design keeps your system running smoothly when it matters. Made in the USA.

Rear mounting works with any rifle that features a push-button QD socket on the receiver, end plate, or buttstock. Front attachment uses the optional Paraclip to connect with Magpul RSA and MSA mounts, as well as snap-hook style sling loops and standard QD swivels. This approach gives you true one-to-two-point convertibility—no tools, no fussing. The heavy-duty push-button QD sling swivel at the rear provides secure one-point attachment with quick-release capability when you need it.

If you run an MS1 sling and want the flexibility to go from a single-point carry to a more stable two-point setup, or if you're building a modular rifle system that needs to adapt to different missions, this adapter earns its place in your kit.

Key Features

• Converts between one and two-point sling configurations using MS1 sling and optional Paraclip
• Manganese-phosphate finished steel and reinforced polymer hardware for field durability
• Custom 1.25-inch nylon webbing with NIR treatment to reduce thermal signature
• Heavy-duty push-button QD sling swivel for one-point rear attachment
• Snag-free design for reliable performance in fast-moving situations
• Compatible with standard QD sockets, Magpul RSA/MSA mounts, and snap-hook style sling loops
• Made in the USA

Specifications

Frequently Asked Questions

What sling do I need to use with the MAG519 adapter?

The MAG519 works with the Magpul MS1 sling. For two-point configuration, you'll also want the optional Paraclip, which enables quick transitions and provides emergency quick-release capability.

What QD sockets and sling mounts is this adapter compatible with?

On the rear, it mounts to any rifle receiver, end plate, or buttstock with a push-button QD socket. On the front, when paired with the optional Paraclip, it works with Magpul RSA and MSA forward mounts, as well as snap-hook style sling loops (minimum 3/8-inch inner diameter; 9/16-inch or larger is recommended for full range of motion) and standard or QD sling swivels.

Can I use this adapter for hunting?

Yes. The adapter's ability to switch between one and two-point configurations makes it practical for hunting applications where you need flexibility—carried one-point for quick access, transitioned to two-point for steady shooting or longer carries. The NIR-treated coyote webbing also helps reduce thermal signature in field conditions.

Does the adapter come with the Paraclip or MS1 sling?

The information provided does not specify what is included with the adapter. Check the product listing for details on whether the Paraclip or MS1 sling are bundled or sold separately.