Arisaka Defense Offset Plate, 1913 Picatinny Rail Adapter, 40 Degrees OnlyArisaka Defense$25.00
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Arisaka Defense
The Arisaka Defense Offset Picatinny Adapter bridges the gap between modern handguard mounting systems and Picatinny-rail accessories. If you're running M-Lok, KeyMod, or CMR slots on your rifle but need to mount lights, lasers, or other Picatinny gear, this adapter solves that compatibility problem without forcing you into a whole new rail ecosystem. It's a straightforward solution: attach it to an Arisaka Offset Scout Mount or Side Scout Mount, and you've got a Picatinny surface ready for your existing lights and optics.
Built from 6061-T6 aluminum and hard coat anodized to MIL-A-8625 Type III spec, the adapter is tough enough for duty use and light enough not to throw your balance off. It's a slim 1.76 inches long and weighs half an ounce, so it tucks in nicely without creating a bulky setup. The design is CNC machined for precision fit—no wobble, no surprises when you mount critical gear.
This is a purpose-built piece of the Arisaka mounting ecosystem. You'll need one of their Scout Mounts (either Offset or Side, in M-Lok, KeyMod, or CMR) to use it, but once you pair them together, you've got a rock-solid mounting solution. Everything ships with the hardware you need—two 8-32x3/8" Torx flat head screws—and it's made in the USA.
| Length | 1.76 inches |
| Weight | 0.5 oz |
| Material | 6061-T6 aluminum |
| Finish | MIL-A-8625 Type III hard coat anodized |
| Hardware | Two 8-32x3/8" Torx flat head screws (included) |
| Manufacture | USA |
The adapter is compatible with M-Lok, KeyMod, and CMR (Carry Optics Mounting Rail) handguards, provided it's paired with the appropriate Arisaka Scout Mount for your slot type.
Yes. This adapter must be attached to either an Arisaka Offset Scout Mount or Side Scout Mount (in the matching slot type—M-Lok, KeyMod, or CMR) to function as a complete mounting system.
Any Picatinny-rail accessory will fit, including tactical lights like the Surefire X300, Inforce WML, and similar weapons-mounted optics and gear designed for Picatinny interfaces.
The adapter ships with two 8-32x3/8" Torx flat head screws for mounting to your Scout Mount.
Arisaka Defense
The Arisaka Defense Offset Picatinny Adapter bridges the gap between modern handguard mounting systems and Picatinny-rail accessories. If you're running M-Lok, KeyMod, or CMR slots on your rifle but need to mount lights, lasers, or other Picatinny gear, this adapter solves that compatibility problem without forcing you into a whole new rail ecosystem. It's a straightforward solution: attach it to an Arisaka Offset Scout Mount or Side Scout Mount, and you've got a Picatinny surface ready for your existing lights and optics.
Built from 6061-T6 aluminum and hard coat anodized to MIL-A-8625 Type III spec, the adapter is tough enough for duty use and light enough not to throw your balance off. It's a slim 1.76 inches long and weighs half an ounce, so it tucks in nicely without creating a bulky setup. The design is CNC machined for precision fit—no wobble, no surprises when you mount critical gear.
This is a purpose-built piece of the Arisaka mounting ecosystem. You'll need one of their Scout Mounts (either Offset or Side, in M-Lok, KeyMod, or CMR) to use it, but once you pair them together, you've got a rock-solid mounting solution. Everything ships with the hardware you need—two 8-32x3/8" Torx flat head screws—and it's made in the USA.
| Length | 1.76 inches |
| Weight | 0.5 oz |
| Material | 6061-T6 aluminum |
| Finish | MIL-A-8625 Type III hard coat anodized |
| Hardware | Two 8-32x3/8" Torx flat head screws (included) |
| Manufacture | USA |
The adapter is compatible with M-Lok, KeyMod, and CMR (Carry Optics Mounting Rail) handguards, provided it's paired with the appropriate Arisaka Scout Mount for your slot type.
Yes. This adapter must be attached to either an Arisaka Offset Scout Mount or Side Scout Mount (in the matching slot type—M-Lok, KeyMod, or CMR) to function as a complete mounting system.
Any Picatinny-rail accessory will fit, including tactical lights like the Surefire X300, Inforce WML, and similar weapons-mounted optics and gear designed for Picatinny interfaces.
The adapter ships with two 8-32x3/8" Torx flat head screws for mounting to your Scout Mount.
