Features:Proudly Designed and Made in USAMonolithic Design Combines M-LOK and Optics Real Estate into One Rigid Mount6061-T6 Aluminum with Dehorned Corners and Melted Contours and Finished in H-146 Graphite Black CerakotePatented Claw Mount Locking InterfaceExtended 16 Slot Picatinny Flat-Top with Cutout for Serial Number Identification17 Full and 5 Half M-LOK Slots Around Circumference of HandguardChamfered Locking Recess Notch Prevents Hot Spots and Snag Points while Manipulating Charging HandleOverall Lightweight at 9.8oz InstalledIntegral Left and Right Side Anti-Rotational QD SocketsDesigned for 9mm Receiver MP5 and Clones and Compatible with Most Collapsible and Fixed StocksUS PAT. 11656059