The Odin Works O2 Lite M-LOK Handguard is the lightest of all the ODIN Works Forends. Precision machined from 6005-T651, the O2 Lite is a full 20% lighter than its predecessors. All ODIN Works Forends are free floating for accuracy and hard anodized for durability. FeaturesFree float. Made from 6005-T651 AluminumHardware weight: 2.7ozOutside diameter: W-1.8" H-2.16"Engineered with advanced ergonomics for comfort and improved performanceAccessory rails can be placed at 3, 6, and 9 o'clock positions and can be joined to create continuous Pic Spec RailFour or more QD attachment pointsMade to fit Magpul QD.Engineered to allow for low profile gas block to fit inside