The AR-15 free float handguard mounts directly to the upper receiver barrel nut, eliminating contact with the barrel. This design lets the barrel vibrate freely during firing for improved accuracy. Builders attach it to standard mil-spec upper receivers with compatible barrel nuts and low-profile gas blocks. It provides full-length rail sections or M-LOK slots for lights, grips, optics, and other accessories. The handguard fits carbine, mid-length, and rifle-length gas systems. Shooters choose an AR-15 free float handguard for better accuracy and more attachment points on any build.