Magpul M-LOK 4-Slot Dovetail Adapter, RRS/ARCA Interface - Black

The Magpul M-LOK 4-Slot Dovetail Adapter bridges the gap between modern M-LOK handguards and RRS/ARCA-interface accessories—a pairing that's become essential for precision rifle shooters who want to run ARCA-compatible bipods, monopods, and tactical equipment. If you've invested in RRS dovetail gear but your rifle wears an M-LOK handguard, this adapter lets you use that ecosystem without replacing either platform. It's a straightforward mechanical solution to a real compatibility problem.

Built from aluminum and hard-coat anodized for durability, the 4-slot adapter is machined with beveled edges to prevent snagging—details that matter when you're mounting and remounting gear in the field or at the range. The adapter occupies two M-LOK slots on your handguard, providing a solid, low-profile interface. Magpul drilled and tapped it at multiple points so you can dial in attachment hardware with precision, reducing the risk of overtravel and giving you repeatable reference points shot after shot. Made in the USA, it's built to the standard you'd expect from Magpul's precision-rifle line.

This adapter works with all standard RRS dovetails, making it compatible with the broad ecosystem of ARCA-interface equipment already out there. Whether you're setting up a precision long-range rifle or a tactical carbine, it eliminates the guesswork of finding an M-LOK-to-ARCA solution that actually works.

Key Features

• RRS/ARCA-compatible dovetail interface for M-LOK handguards
• Hard-coat anodized aluminum construction for durability and corrosion resistance
• Beveled edges reduce snagging and wear
• Drilled and tapped attachment points for repeatable setup and hardware placement
• Occupies two M-LOK slots for a low-profile mount
• Manufactured in the USA

Specifications

Frequently Asked Questions

Is this adapter compatible with my RRS bipod or monopod?

Yes—the adapter works with all standard RRS dovetails, so any RRS or ARCA-interface accessory will mount directly to it.

How many M-LOK slots do I need on my handguard?

The 4-slot adapter requires two M-LOK slots on your handguard. Make sure your rail has at least that much real estate available where you want to mount it.

Can I use this on any M-LOK handguard?

Yes, the adapter is compatible with all standard M-LOK handguards. The two-slot footprint is the only constraint; your handguard must have two adjacent M-LOK slots in the location where you want to mount it.

What's included in the box?

You receive the Magpul M-LOK 4-Slot Dovetail Adapter. Hardware for attachment to your handguard is not included; you'll need standard M-LOK bolts or fasteners depending on your specific setup.