Product DescriptionThe Fortis Manufacturing Night Rail is a free-float AR-15 handguard engineered for fast, secure installation and hard-use durability. Its proprietary, patent-pending 2-piece barrel nut provides full 360-degree contact with the upper receiver for a rigid, dependable interface. The Night Rail combines a full-length Picatinny top rail with M-LOK mounting slots along the side and bottom flats, plus short Picatinny sections at the 3, 6, and 9 o'clock positions for versatile accessory placement-finished in black for a clean, professional build.Product Highlights Proprietary, patent-pending 2-piece barrel nut delivers 360Adeg receiver contact for a robust lockup Free-float design helps reduce external pressure on the barrel for consistent performance Full-length Picatinny top rail with additional short Picatinny sections at 3/6/9 o'clock M-LOK accessory slots on side and bottom flats for lightweight, modular setup Hardcoat anodized black aluminum construction for strength with reduced weightSpecs Brand: Fortis Manufacturing, Inc. Model: Night Rail Type: AR-15 free-float handguard / rail system Mounting System: M-LOK Top Rail: Full-length Picatinny Additional Rail Sections: Short Picatinny at 3, 6, and 9 o'clock Overall Length: 10.5 in Inside Diameter: 1.35 in Materials: 6061-T6 aluminum handguard; 4140 steel proprietary 2-piece barrel nut Finish: Mil-Spec hard coat Type III anodized Color: Black Weight: 8.3 oz (handguard); 3.9 oz (barrel nut) Country of Manufacture: Made in the USA Included: Throw-away barrel nut wrench (for installation) UPC: 855476008032 Manufacturer Part Number: NTR-10-MLDisclaimer: 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.