The Arisaka 300 Series Light Body is designed as a streamlined replacement body for Surefire Scout Light M300 weapon lights. The 300 Series Light Body is manufactured without the mounting interface for the stock Picatinny clamp. This greatly increases the clearance for front sights when used in combination with the Arisaka Inline Scout Mount on handguards with 45 degree mounting surfaces adjacent to the top Picatinny rail.