Product Description The Geissele Automatics Super Modular Rail (SMR) MK16 is a premium 15-inch free-float M-LOK handguard engineered for hard use on AR-15 platforms. It mounts to your upper receiver with Geissele&';s proven barrel nut design for straightforward installation and service, while delivering excellent rigidity. Anti-rotation tabs and set screws help keep the rail locked in place under demanding conditions. Built from strong, lightweight 7000-series aluminum and finished in durable Type III (Type 3) hardcoat anodized black, the MK16 provides a full-length M1913 Picatinny top rail plus M-LOK slots around the handguard for flexible accessory placement. Product Highlights 15-inch free-float MK16 Super Modular Rail for AR-15 builds needing maximum rigidity and modularity M-LOK accessory slots on multiple surfaces for versatile mounting of lights, grips, and other attachments Full-length M1913 Picatinny top rail for optics, aiming devices, and front sights Anti-rotation tabs and set-screw retention help prevent handguard movement under recoil and hard use Precision-machined 7000-series aluminum with Type III hardcoat anodized black finish for strength and durability Specs Brand: Geissele Automatics Model: Super Modular Rail (SMR) MK16 Handguard Type: Free-float Length: 15 in Mounting Interface: M-LOK Top Rail: M1913 Picatinny Material: 7000-series aluminum Finish/Color: Type III hardcoat anodized, Black Exterior Height: 2.39 in Inner Diameter: 1.26 in Outer Diameter: 1.59 in Weight: ~15.6 oz (~17.1 oz with barrel nut) Manufacturer Part Number: 05-792B UPC: 817953028322 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.