Arisaka Offset Scout Mount KeyMod™

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The Arisaka Offset Scout Mount is designed specifically for the SureFire® Scout Light M600 and M300 series weapon lights, the Arisaka 300 and 600 Series Lights, and the Streamlight Protac Rail Mount 1, 2 and HL-X. It replaces the stock Picatinny rail adapter with a low profile mount for KeyMod™ handguards. The Offset Scout Mount uses BCM's patent pending inverted screws, which allows it to be less than 0.20" thick.

When used on the side mounting surfaces of a KeyMod™ handguard, the Offset Scout Mount places the light at a 45 degree angle and tucks it in closer to the handguard. Oriented upwards, the light is located at approximately the 1:30 or 10:30 clock positions. Oriented downwards, the light is located at approximately the 4:30 or 6:30 clock positions.

The Offset Scout Mount also provides three lateral mounting positions for the light body, which allows the user to position the light closer or farther away from the top rail, front sights, or other accessories. Three positions are provided, spanning approximately 0.240". When used with the Arisaka 300 Series Light Body or 600 Series Light Body, even more clearance can be gained for larger front sights.

As shown in the pictures, the Offset Scout Mount fits the Noveske NSR perfectly, and should be compatible with most KeyMod™ handguards like the BCM® KMR, KAC URX4, Geissele SMR MK4/5 KeyMod™, Mega MKM, Midwest Industries SSK, and Daniel Defense SLiM.

Compatible with SureFire® M300A, M300B, M300C, M600B, M600C, M600P, M600U, M600V, M600DF, Streamlight Protac Rail Mount 1, 2 and HL-X, and Arisaka 300 and 600 Series.

M620 series lights can also be used with the Offset Scout Mount with the addition of the Arisaka Offset M620 Adapter.


Length: 1.265"

Weight: 0.4 oz

The mount is CNC machined from 6061 aluminum and type III hard coat anodized. Includes necessary screws to attach light body to mount. Requires a T15 Torx and 5/64" Allen wrench for installation (not included). BCM® KeyMod™ screws are covered under US Patent 9377274. Made in the USA.

***This product contains chemicals/materials known to the State of California to cause cancer and other reproductive harm. To learn more, visit***

11 Reviews

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  • 5
    Super close fit, perfectry streamlined

    Posted by A C on Jan 1st 2016

    If you're looking for a very streamlined way to mount your scout light to your handguard then look no further. I mounted this on my keymod handguard at the 3 o'clock slot and then out the scout light at the highest mounting position and it brings the light tight up against the upper picatinny rail. NOTE is will interfere with front BUIS, I have the KAC micros and had to move them back a few slots, but it was worth it for the super snug and snag free design of this mount. Also want to point out that it looks super sleek and practically disappears on the rail, highly recommend!

  • 5
    Arisaka offset scout mount

    Posted by Jeff on Nov 25th 2015

    This is a high-quality mount that was easy to install, and has some adjustment in regard to light placement. It allows the light to be located very close to the rail, which reduces the profile of the light and puts the tailcap switch in the perfect position.

    My minor complaint in relation to this item and other weapon mounts is that I would like to see all mounting hardware standardized as far as screw head type and size where possible. This would be a benefit to some people by reducing parts and tools to carry (especially those working in remote areas and with reduced equipment.)