Arisaka Defense 300 Series Light Body Black Rail Mount Accessory

The Arisaka Defense 300 Series Light Body is a streamlined replacement body engineered for Surefire Scout Light M300 weapon lights. By eliminating the mounting interface for the stock Picatinny clamp, it provides significantly improved clearance for front sights when paired with the Arisaka Inline Scout Mount on handguards featuring 45 degree mounting surfaces adjacent to the top Picatinny rail. The 300 Series Light Body maintains full compatibility with Scout Light M300 series tailcaps and heads including the KM1E, KE1A, and KX1A models, with complete support for IR heads. The light body retains the mounting holes and square lug interface on its underside, allowing it to function in any aftermarket Scout mount. It is also possible to assemble a complete light from scratch by sourcing additional components—a variety of tailcaps and aftermarket light heads are available from online retailers. The Malkoff E1T pairs exceptionally well with the 300 Series Light Body, delivering higher lumen output and greater spill compared to the stock M300B while maintaining a smaller overall size and USA manufacturing.