ODIN Works O2 Lite Free Float .223/5.56 M-LOK Forend QD Low Profile Black 15.5in. Designed to work with DPMS pattern uppers the forend works with both high(2.06in) and low(2.00in) profiles. The O2 Lite is the latest and lightest of all the ODIN Works forends. Precision machined from 6005-T651 the O2 lite is a full 20percent lighter than its predecessors. All ODIN Works forends are free floating for accuracy and hard anodized for durability. Specifications for ODIN Works O2 Lite Free Float M-LOK Forend: Manufacturer: ODIN Works Fabric/Material: 6005-T651 Aluminum Gun Make: AR Platform Gun Type: Rifle Gun Rail: M-LOK Condition: New Included Accessories: Standard Quantity: 1 Features of ODIN Works MLOK O2 Lite Ergonomic Free Float Forend QD: Forend adapter threading: 1 7/16-16 (Armalite adapter threading: 1 7/16-18). Weight: 8.05 oz (without hardware-hardware weight: 2.7oz) Free float. Inside diameter: 1.75" Outside diameter: W-1.95" H-2.23" Engineered with advanced ergonomics for comfort and improved performance. Accessory rails can be placed at 3 6 and 9 o'clock positions and can be joined to create continuous Pic Spec Rail. QD sling mount positions at 3 and 9 o'clock. Key slots double as QD sling mount positions. Made to fit Magpul QD. Package Contents: ODIN Works Lite Free Float Forend MLOK QD Barrel nut Alignment pin ODIN Works F-15-ML-O2: O2 Lite Free Float .223/5.56 M-LOK Forend QD Low Profile Black 15.5in