Product DescriptionThe Fortis Manufacturing REV II AR-15 M-LOK Handguard is an extremely lightweight yet robust free-floating rail system built around a rigid one-piece body design. M-LOK cutouts at the 3, 6, and 9 o&';clock positions provide modular accessory mounting while helping reduce overall weight. A continuous top Picatinny rail supports optics and iron sights, and the integrated anti-rotation tabs add stability once installed. The REV II uses a unique mounting system that attaches to a standard AR-15 barrel nut (not included) for quick, straightforward installation and is compatible with both direct impingement and piston operating systems.Product Highlights Free-float AR-15 handguard/rail with lightweight, strong one-piece body construction M-LOK slots at 3/6/9 o&';clock for modular accessory mounting and weight savings Continuous top Picatinny rail for optics, sights, and accessories Military Specification Type III hard coat anodized finish for durability Rotation-limited quick-detach (QD) sockets plus anti-rotation tabs for secure setup Specs Brand Name: Fortis Manufacturing, Inc. Model: REV II Product Type: Free float AR-15 handguard / rail system Mounting Interface: M-LOK (3, 6, and 9 o&';clock) Top Rail: Continuous Picatinny Finish: Military Specification Type III Hard Coat Anodized (Black) Overall Length: 14.8 in Inside Diameter: 1.34 in Barrel Nut: Not included (attaches to a standard AR-15 barrel nut) Compatibility: Direct impingement and piston systems Manufacturer Part Number: REV-II-14-MLOK UPC: 855476008131 Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product&';s manufacturer.