The O2 Lite is the latest and lightest of all the ODIN Works M-LOK 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. Every ODIN Works forend features at least 4 QD anti swivel attachment points. All mounting and timing hardware is included making the installation the simplest and fastest in the industry. Fits mil spec AR15 uppers and most billet uppers. One 5-slot accessory rail included. Mfg: Odin Works Inc.