Features: Proudly Designed and Made in USA Monolithic Design Combines M-LOK and Optics Real Estate into One Rigid Mount 6061-T6 Aluminum with Dehorned Corners and Melted Contours and Finished in H-146 Graphite Black Cerakote Patented Claw Mount Locking Interface Extended 16 Slot Picatinny Flat-Top with Cutout for Serial Number Identification 17 Full and 5 Half M-LOK Slots Around Circumference of Handguard Chamfered Locking Recess Notch Prevents Hot Spots and Snag Points while Manipulating Charging Handle Overall Lightweight at 9.8oz Installed Integral Left and Right Side Anti-Rotational QD Sockets Designed for 9mm Receiver MP5 and Clones and Compatible with Most Collapsible and Fixed Stocks US PAT. 11656059