Arisaka Offset Scout Mount for Sig Sauer MCX - M-LOK Compatible

The Arisaka Offset Scout Mount for Sig Sauer MCX in M-LOK configuration gives you a compact, low-profile way to mount tactical weapon lights on your MCX platform. This is precision engineering for shooters who demand clean lines and uncluttered sight pictures on modern sporting rifles. Arisaka Defense engineered this mount to work with popular Scout-style light heads—including Surefire M-series, Modlite PLH and OKW, Streamlight Protac, and select Olight and Arisaka housings—while trimming down the bulk and footprint of traditional Picatinny adapters.

The 45-degree offset mounting angle tucks your light closer to the handguard and keeps the beam clear of your top-mounted optics and accessories. Position the head at the 1:30 or 10:30 o'clock position for overhead mounting, or flip it to 4:30 or 6:30 for side carry. Three lateral adjustment positions let you dial in the exact spacing you need around front sights, laser modules, or other rail-mounted gear—critical when you're running a dense accessory setup. At less than 0.20 inches thick and just 0.4 ounces, this mount won't bloat your rifle profile.

Built from 6061-T6 aluminum and finished with military-grade Type III hard-coat anodizing, the Arisaka mount is made to handle duty-grade use. Installation uses standard Torx fasteners (an IP20 TorxPlus driver is needed; not included). The M-LOK version ships with the hardware required to secure the light head to the mount. Arisaka backs this design with U.S. patents and manufactures it domestically.

Key Features

• 45-degree offset angle keeps lights tucked tight and clear of top rails
• Three lateral positions for fine-tuning clearance and sight picture
• Ultra-low profile—less than 0.20 inches thick
• Weighs only 0.4 ounces
• Compatible with Surefire M-series, Modlite PLH/OKW, Streamlight Protac, and select Arisaka and Olight housings
• 6061-T6 aluminum with Type III hard-coat anodize finish
• Designed for M-LOK handguard systems
• Made in the USA

Specifications

Mount Type	M-LOK Offset Scout Mount
Length	1.265 inches
Weight	0.4 ounces
Material	6061-T6 aluminum
Finish	MIL-A-8625 Type III hard-coat anodize
Included Hardware	Two M-LOK nuts, two 10-24x5/16" Torx button head screws, two 8-32x3/8" Torx flat head screws
Mounting Angle	45 degrees (side mounting)
Lateral Positions	Three positions

Frequently Asked Questions

What weapon lights are compatible with this M-LOK mount?

The Arisaka M-LOK Offset Scout Mount works with Surefire M-series lights (M300A, M300B, M300C, M300V, M312, M312V, M313V, M322, M322V, M600B, M600C, M600P, M600U, M600V, M600DF, M612, M612V, M622, M622V, M603V), Modlite PLH, PLHv2, and OKW, Streamlight Protac Rail Mount 1, 2, and HL-X (non-laser), Olight Odin, CD REIN, and Arisaka 300, 600, and 18650 Series light bodies.

Will this mount fit my Sig Sauer MCX with all handguards?

The M-LOK version is compatible with most M-LOK handguards. However, it will not fit the standard MCX Virtus handguard profile unless you're using the MCX suppressor-width handguard variant. Check your handguard compatibility before ordering.

What tools do I need to install this mount?

You'll need an IP20 TorxPlus driver to attach the light body to the mount (not included). Installation torque is 20 inch-pounds for M-LOK screws and light body screws, using medium-strength threadlocker (Loctite 222 or 243).

How many positions can I adjust the light to?

The mount offers three lateral adjustment positions, spanning approximately 0.240 inches, allowing you to move the light closer to or farther from the top rail, front sights, and other accessories. When mounted on the side surface of the handguard, the light sits at a 45-degree angle and can be oriented upward (1:30 or 10:30 o'clock) or downward (4:30 or 6:30 o'clock).