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Geissele SMR 416 Offset Scout Mount and Indexer

The Arisaka Offset Scout Mount for Geissele SMR 416 handguards was developed at the request of a United States special operations unit. This is a contract overrun, with the remaining units being made available to civilians.

These mounts attach directly to the threaded inserts on the Geissele SMR 416, eliminating additional Picatinny rails and Picatinny mounts. Three lateral light positions allow the user to tuck the light closer to the top rail or gain clearance around top rail mounted accessories like laser illuminators. In particular, there is enough clearance for the larger Modlite OKW and PLH heads to fit next to the NGAL, LA-5/PEQ, AN/PEQ15 and ATPIAL-C. It will also allow lights to clear the QD lever on the Steiner DBAL I2, A3, and D2.

In addition to three lateral light positions, the mount also allows fore and aft adjustment so the user can fine tune the location of the light to their setup.

Available here. Shipping October 21.

We have also released a new control accessory called the Indexer, which is available for the Geissele SMR 416 and M-Lok. It was developed due to end-user demand for a Geissele SMR 416 and M-Lok version of our Finger Stop for Picatinny rails, and features a slim front-to-back profile and slight radius across both faces.

The Indexer can be used in a variety of ways, but the main intent is to place it between two fingers (usually index and middle). This typically places it further forward on the handguard, which also means it doesn't get in the way when transitioning to kneeling or prone shooting positions, where most people move their support hand towards the rear. Used in this manner, the Indexer makes it much easier to pull the rifle into your shoulder and maintain control while shooting.

Additionally, the wider, flatter profile of the Indexer functions very well as a hand stop or barricade stop, and also works as a forward limit to prevent your fingers from slipping off shorter handguards onto a hot barrel or suppressor.

Indexer for Geissele SMR 416.

Indexer for M-Lok.

October 21, 2019 by William Roberson

Introducing The Arisaka Offset Optic Mount

The Patent Pending Arisaka Offset Optic Mount is a modular, configurable offset red dot mounting solution that provides the end user with a host of features:

  • Unique geometry allows the optic to sit at 35 or 45 degrees to reduce width/bulk.
  • On an AR15 the optic maintains alignment over bore and lower 1/3 co-witness height at both 35 and 45 degree positions.
  • Compatible with a wide array of red dot sights via six plates:
    • Plate 1 - Docter, Eotech, Insight, Meopta, Vortex Venom
    • Plate 2 - Trijicon RMR/SRO, Holosun 407C/507C
    • Plate 3 - C-More
    • Plate 4 - Leupold Delta Point
    • Plate 5 - Aimpoint Micro T1/T2 and clones
    • Plate 6 - Aimpoint Acro
  • Minimal footprint - 1" long base with twin recoil lugs occupies only three Picatinny slots.
  • Minimal weight - 1.9 oz without optic.
  • Made in the USA

Configure the optic for 35 or 45 degrees simply by reversing the stem during assembly. Tuck your red dot up close to your scope to reduce bulk and keep it as low profile as possible - comparison image below:

Available here. Shipping September 5.

September 01, 2019 by William Roberson

Which Scout Mount Should I Choose?

This is a question I get asked multiple times a day. There are nearly an infinite number of combinations of lights, mounts and handguards, so it's not always obvious which one you should pick. The following is a brief run down of our light mount offerings that are compatible with Surefire Scout lights like the M300C and M600DF, the Streamlight Protac Rail Mount 1, 2 and HL-X, the Arisaka 300 and 600 series lights, and the new Modlite 18650 and 18350 lights.

Inline Scout Mount - M-Lok, KeyMod, Troy/VTAC

Our Inline Scout Mount is arguably the lowest profile mounting solution we offer. It's especially great on handguards that have 45 degree slots like the Geissele MK8 and MK16, or BCM MCMR. The Inline includes our overlapping hole design for the light body to attach to, which allows for a slight bit of offset adjustment and gives you some clearance for front sights like the Magpul MBUS Pro. Laser/illuminator users (ATPIAL-C, PEQ15, DBAL-A3 etc.) will want to opt for the Side Scout Mount instead, as there's simply not enough room on an AR handguard to run the light at 45 degrees below the laser/illuminator. Otherwise, if you want the lowest, sleekest option then the Inline is the way to go.

Offset Scout Mount - M-Lok, KeyMod, Picatinny

Our Offset Scout Mount is the utility option, offering a wider array of compatibility with different handguards and additional clearance compared to the Inline Scout Mount for top rail mounted accessories. The design places the light in the 2 or 10 o'clock position, so this is the go-to mount if your handguard only has M-Lok or KeyMod slots on the 3 and 9 o'clock sides. The latest version utilizes tapered Torx screws for attaching the light body, which securely locks the light in position and are more resistant to vibrating loose (as always, we recommend medium strength thread locker on all fasteners). The Offset is my favorite light mount since it doesn't require a handguard with 45 degree interfaces, and is very strong and robust. It will also work with some laser/illuminators on the top rail like the DBAL-A3, depending on placement. The Picatinny version can also be attached to the 12 o'clock rail, which is especially useful on some firearms like the SIG MCX.

Side Scout Mount - M-Lok, KeyMod, Picatinny

The Side Scout Mount should be your first choice if you're running a PEQ15 or DBAL laser/illuminator because it places a Scout light just under the edge of the clamping screw or locking lever, while still keeping the light tucked in as much as possible. It can also be used without a laser/illuminator, but most people would probably prefer the Offset Scout Mount instead. The Side Scout Mounts are also great on firearms besides ARs that have tall, flat receivers such as the Sig MCX Virtus, CZ Scorpion and B&T APC9. Like the Offset mounts, the Side Scout Mount uses tapered Torx screws to attach the light, and is the most durable mount we make.

May 17, 2019 by William Roberson

February 2019 New Products

To go along with the Side Scout Mount for M-Lok that was released last year, we now have KeyMod and Picatinny versions available. As mentioned in our previous post, the Side Scout Mount is designed to tuck Surefire Scout lights under the side of the ATPIAL-C, AN/PEQ15, and LA-5/PEQ laser illuminators. The mounts also work with the Arisaka 300 and 600 series lights, the Streamlight Protac Rail Mount 1, 2 and HL-X, and the Steiner DBAL I2, A3, and D2 laser illuminators.

Due to the design these mounts are very strong, and allow for compatibility with a huge array of rail systems, lights, and lasers, all while keeping costs down. They also do not consume any top rail space, especially important on SBRs or pistols where there's not much rail space to begin with. Additional details and photos can be found on each of the Side Scout Mount product pages: M-Lok, KeyMod and Picatinny

To compliment our Side Scout Mounts we have also released a new tailcap adapter that allows the Streamlight Protac Rail Mount 1 and 2 to use Surefire tailcaps and remote switches. An HL-X version is also coming, with an ETA of early March. These adapters were made so that the Surefire SR-D-IT and Unity TAPS dual switches could be used with the Protac Rail Mount lights in combination with laser illuminators. The smaller, more durable remote switch options from Surefire are also a great option even if you don't need the dual switches.


Like our new Side Scout Mounts, these new tailcap adapters are available and shipping now. Full details and additional photos can be found here.

February 10, 2019 by Shelley Cole

The Side Scout Mount, a solution for laser/illuminator users

The Side Scout Mount, or SSM, is a Scout Light mount that is designed to tuck the light underneath either side of the L3 ATPIAL series of laser/illuminators.

This mount was an idea that began all the way back in 2016 when we 3D printed the first prototypes. It was set aside, partly because we didn't have free machine time, but also because the market for night vision users is a small subset of the wider accessory market, where the demand far outpaced our production capacity.

Earlier this year we had enough end user requests to bring the SSM back into focus, so we began to field multiple prototypes of varying layout, like the ones seen on the SMC Instagram. Ultimately, we decided to stick to our core principles and make the mount as low profile as possible.

The SSM is compatible with Surefire's M300 and M600 Scout Lights, the Arisaka 300 and 600 Series lights, and the Streamlight Protac Rail Mount lights. It provides clearance with L3's ATPIAL-C, AN/PEQ15, and LA-5/PEQ, and will also place the light below the QD lever on the Steiner DBAL I2, A3, and D2 units.

The first production run of M-Lok mounts is already at anodizing, but everything slows down during the holidays so we're conservatively estimating that hard coat black anodized parts will ship in early January, and FDE Cerakote in late January. A KeyMod version will follow.

A preorder is available on the product page, along with additional photos and info.

December 14, 2018 by William Roberson

The Arisaka Inline Scout Mount

First released in 2014, we have continually revised our Inline Scout Mounts to make them stronger, lower profile, and more user friendly. These are the perfect way to mount a Surefire Scout, Arisaka, or Streamlight Protac Rail Mount light to your handguard, and work especially well on 45 degree mounting slots like found on the BCM MCMR and KMR, or Geissele SMR MK4 and MK8.

The overlapping hole design allows you to shift the light closer or farther away from the top rail, providing additional clearance for wider front sights or other accessories.

Constructed of 7075-T6 aluminum and MIL-A-8625 Type III hard coat anodized, the Inline Scout Mounts weigh just 0.6 oz and are 0.20" thick at the light mounting point. Available now for M-LokKeyMod, and Troy/VTAC Alpha handguard interfaces.


November 15, 2017 by William Roberson

Mossie Midnight Mounts are back!

Arisaka is proud to announce the reintroduction of the Mossie Midnight Mount. Manufactured on our machines with Buck Mossie's blessing, the Mossie MidnightMount is designed to place a 1913 Picatinny based weapon light at 12 o'clock for ambidextrous use. It easily installs on most standard and "F" marked front sight bases. The host weapon is not modified, which is especially important to many law enforcement officers who may not be allowed to alter their issued patrol rifles.

  • Fits most standard and "F" marked front sight bases
  • Provides an unobstructed sight picture with the Surefire X300, Streamlight TLR1 and TLR3, Insight M3, and Insight Procyon/WX150
  • Designed for ambidextrous use
  • 4 slot 1913 Picatinny rail
  • CNC machined from 6061-T6 aluminum and MIL-A-8625 Type III hard coat anodized
  • 3" overall length and less than 1 ounce in weight
  • 100% made in the USA

More details can be found on the product page.

October 16, 2017 by William Roberson

Offset Scout Mounts for the MCX and MCX Virtus

Arisaka is proud to announce the release of an Offset Scout Mount for the MCX and MCX Virtus. Instead of relying on the KeyMod or M-Lok slots on the tall handguards found on these rifles, our mount is designed to attach to the vent holes, and tucks the light in near the top 12 o'clock rail. Like our other Offset Scout Mounts, any Arisaka 300 or 600 Series Light, Surefire Scout M300 or M600, or Streamlight Protac Rail Mount 1, 2, and HL-X can be used. The mount also allows the light to be tucked in closer to the top rail, or moved outwards for additional clearance around laser illuminators or other accessories.

Additional photos and details can be found on the product page.

September 15, 2017 by William Roberson

Low Profile Mount for Harris Bipods

Apex, NC, August 9, 2016 - Arisaka LLC is pleased to announce the release of our new Low Profile Bipod Mount.

Designed for Harris S-series bipods, the Low Profile Bipod Mount replaces the entire stock sling swivel interface with a minimalist Picatinny mount. Rotation limiters allow for approximately 15 degrees of cant to either side for leveling, and the mount is compatible with pod lock levers.

The Low Profile Bipod Mount places the bipod 1/8" below the Picatinny rail, greatly reducing the overall height. Combined with its weight at just over one ounce and a short 1.4" length, it significantly reduces bulk compared to the stock mount. Machined from billet 6061 aluminum and MIL-A-8625 Type III hard coat anodized, the Low Profile Bipod Mounts are built for rough use and long term reliability.

The Low Profile Bipod Mount is compatible with Harris S-series swivel bipods including the S-BR, S-BRM, S-L, S-LM, S-25, and S-25C.

Users of KeyMod and M-Lok rail systems can utilize the Low Profile Bipod Mount with our Picatinny rail sections, which feature a reduced height and triple engagement points for maximum strength: Low Profile Picatinny Rail KeyMod and Low Profile Picatinny Rail M-Lok.

The Low Profile Bipod Mount is proudly made in the USA and available now on the Arisaka site:

Low Profile Bipod Mount

August 09, 2016 by William Roberson

Low Profile Picatinny Rails for KeyMod and M-Lok

Apex, NC, August 8, 2016 - Arisaka LLC is pleased to announce the release of our new Low Profile Picatinny Rails for KeyMod and M-Lok. These 5 slot rails feature a reduced height to pull Picatinny accessories closer to the handguard. They also utilize three KeyMod or M-Lok fasteners which will spread the increased stress of large Picatinny accessories like bipods or vertical grips over more slots on the rail.

The Low Profile Picatinny Rails are machined out of billet 6061 aluminum and MIL-A-8625 Type III hard coat anodized.

Proudly made in the USA and available now on the Arisaka site:

Low Profile Picatinny Rail KeyMod

Low Profile Picatinny Rail M-Lok

August 09, 2016 by William Roberson