For Fast, Easy, Versatile Accessory Mounting- Bolt-on MIL-STD 1913 rails give your MOE handguard plenty of accessory
mounting versatility. Available in four lengths, so you can position
just enough rail area exactly where you need it for each accessory.
Clamps easily to the slots in the handguard with the included steel
mounting hardware. Also fits many standard plastic handguards with
proper center-to-center (c-to-c) hole spacing.