Proudly Designed and Made in USA. Compatible with Carbine-length DI Systems with Standard Delta Ring Assembly Barrel Nut and Round Front Handguard Cap. Precision Machined from 6061-T6 Aluminum and Finished in a Matte Black Anodization. Lightweight with 18 Slot Scalloped Top Picatinny Rail Extends to and Meets Up with Upper Receiver Flat Top Providing Ample Real Estate for Optics and Other Accessories. Features 24 M-LOK Slots on 6 Slot Tracks for Mounting M-LOK Rails and Direct Accessories Easily Tailoring the Rifle to the User’s Specific Requirement. 2 Piece Slim Octagonal Profile with Ergonomic Grooves for a Solid Support Hand Grip and Superior Handling Comfort. M-LOK 8 Slot. Picatinny Rail Section and QD Sling Swivel Adaptor Included. Drop-in Installation Requires No Permanent Modification