Arisaka Inline Scout Pro Mount M-LOK - Precision Tactical Light Mounting Solution

The Arisaka Inline Scout Pro Mount M-LOK is a precision mounting solution built for shooters running Surefire Scout Light Pro bodies on modern tactical rifles. If you're setting up a carbine with a Scout Pro light and want reliable, rock-solid positioning without the guesswork of jury-rigged mounts, this purpose-built M-LOK accessory delivers the kind of engineering that makes a real difference downrange. Arisaka Defense engineered this mount specifically to work with Scout Pro swivel bodies, giving you a straightforward drop-in replacement for the OEM M-LOK mount while opening up smarter light placement options.

The patent-pending triangular design is the standout here—that shape resists the twisting and bending that plagues lighter, cheaper mounts, especially under the recoil and vibration of centerfire rifles. The mount is CNC machined from 6061-T651 aluminum and finished with MIL-A-8625 Type III hard coat anodize, so it'll hold up to field work, storage, and the occasional bump. At 3 inches long and 0.8 ounces, it's lean enough not to add unnecessary bulk to your handguard. You can run it in standard M-LOK position or cant it cantilever-style off the end of your rail to reduce shadow on your barrel or suppressor—a thoughtful option if your light placement is otherwise constrained.

Arisaka supplies two M-LOK nuts and matching hardware (10-24x3/8" hex cap head screws) in the box. Installation is straightforward: torque the M-LOK fasteners to 30 inch-pounds using Loctite 222 or 243 to keep everything locked in place. Made in the USA.

Key Features

• Patent-pending triangular design resists twisting and bending under recoil and vibration
• Drop-in compatible with Surefire Scout Light Pro swivel bodies (M140A, M340C, M340V, M640DF, M640U, M640V)
• M-LOK mounting standard for modern rifle handguards
• Cantilever mounting option to reduce barrel and suppressor shadow
• Lightweight at 0.8 oz with minimal handguard footprint
• CNC machined 6061-T651 aluminum with Type III hard coat anodize finish
• Made in the USA

Specifications

Frequently Asked Questions

Which Surefire Scout Pro lights does this mount fit?

The Arisaka Inline Scout Pro Mount is designed for Surefire Scout Light Pro swivel bodies, including the M140A, M340C, M340V, M640DF, M640U, and M640V models. Confirm your light model before ordering to ensure compatibility.

What M-LOK mounting system does this use?

This mount uses the standard M-LOK interface, so it works on any modern rifle handguard with M-LOK slots. It can be mounted in the traditional perpendicular position or canted cantilever-style off the end of your rail.

What hardware and fasteners come with the mount?

The mount ships with two M-LOK nuts and two 10-24x3/8" hex cap head screws. Arisaka recommends torquing the M-LOK screws to 30 inch-pounds using Loctite 222 or 243 to maintain secure attachment.

Why would I cantilever this mount off the end of my handguard?

Mounting the light cantilever-style—extending it beyond the end of the rail—can reduce shadow cast by your barrel or suppressor onto the target area. This is useful if you're running a suppressor or have limited rail space at your preferred light position.