The Palm Handguard free float tube features a triangular profile that conforms to the palm of your hand giving a secure and comfortable grip on an AR15 or Pistol Caliber Carbine. The vented version of the Palm Handguard provides a Picatinny top rail and KeyMod or optionally M-LOK slots along both upper sides as well as a row of slots along the bottom to accommodate accessories such as a bipod. The lower sides are adorned with the Luth-AR Double L and Cartridge lightning/cooling cuts to further reduce weight and provide heat dissipation with a distinctive good look. The Smooth version of the Palm Handguard provides a Picatinny top rail for attaching scopes and accessories (Note: the Smooth version does not have slots on the bottom and is available in limited quantities).