Round tube free-float handguard for the AR-15 platform. The hollowed-out wall design keeps the tube stiff around the barrel while cutting weight, and the smooth exterior gives a clean look for classic clone builds or a comfortable grip surface for casual shooters who do not want KeyMod or M-Lok slots. Fit AR-15 upper receivers built to mil-spec dimensions Uses the included barrel nut - do not reuse a delta-ring barrel nut Compatible with .750" gas blocks that clear the tube inside diameter Features T6 aircraft-grade aluminum, black powder coat finish Hollowed wall pattern for weight reduction without stiffness loss Pre-drilled end-cap holes (end caps sold separately) Barrel nut included for immediate install Install notes Torque the barrel nut per manufacturer spec (usually 30-80 ft-lb range for AR-15 platforms) and time it to clear the gas tube. Once torqued and timed, thread the handguard tube on and secure. Verify the gas tube is not pinched against the tube ID before test-firing.