Battle Arms Development's Rigidrail M-LOK Handguard is designed to give you just the right balance between weight, strength, and accessory mounting versatility. Its open, skeletonized configuration enables fast, thorough dissipation of barrel heat, even during long rapid-fire operations (but you'll probably want to wear gloves!). M-LOK slots at 3, 6, 9 and 12 o'clock positions open up plenty of accessory mounting options. Short Picatinny rail sections positioned along the top at the front and rear give you mounting points for backup sights or other accessories. The Battle Arms Development Rigidrail M-LOK Handguard allows the barrel to free-float, so it will not Mfg: Battle Arms Development Inc.