A free-float M-LOK slim-profile handguard for AR-15 platform rifles and pistols. Clamp-style mounting locks the handguard onto the steel barrel nut with anti-rotation contact - no barrel contact at all, so support-hand pressure won't shift your zero. Slim 1.5-inch outside diameter, 1.3-inch inside diameter - light, comfortable in the support hand, and clears most low-profile gas blocks. The skeletonized design strips weight without losing rigidity in the mount. Features: 6061 aluminum, hardcoat anodized black MIL-STD 1913 Picatinny top rail, full length M-LOK slots at 12, 3, 6, and 9 o'clock positions Five integrated anti-rotation QD sling mount points Super-slim 1.5" OD / 1.3" ID Skeletonized for maximum weight savings Includes steel barrel nut and mounting hardware Fits standard AR-15 uppers. Verify your gas block is low-profile (.750" max OD) before installation - taller blocks may contact the inner wall.