• Features 56 M-LOK® Slots on 7 Tracks for Mounting M-LOK® Rails and Direct Accessories
• Super Lightweight with 36 Slot Picatinny Top Rail, Flush Fitting, and Continuous with Flat Top Upper Receiver
• Includes 2 M-LOK® Accessories, an 8-Slot Picatinny Rail Section and a QD Sling Swivel Adaptor
• Utilizes Existing Barrel Nut, Integral Anti-rotation Tab, and Precision Cut Barrel Nut Shims for a Secure Installation
• Ergonomic Octagonal Profile with Grooved Surface for a Solid and Comfortable Grip
• Scalloped Top Picatinny Rail Edges for Easy and Snag Free Accessory Mounting
• Precision Machined from 6061-T6 Aluminum and Finished in a Matte Black Hard Coat Anodization
• Compatible with HK Slim Line Gas Block (MR556 Upper), Permanent Modification of Ambi. Sling Loops Required for Other HK Gas Blocks (HK416 Upper, UMAREX HK416 .22LR )
