UTG Leapers Pro MTU055SSM MP5 MONOLITHIC M-LOK HANDGUARD Proudly Designed and Made in USA Monolithic Design Combines M-LOKA(R) and Optics Real Estate into One Rigid Mount 6061-T6 Aluminum with Dehorned Corners and Melted Contours and Finished in H-146 Graphite Black CerakoteA(R) Patented Claw Mount Locking Interface Extended 16 Slot Picatinny Flat-Top with Cutout for Serial Number Identification 17 Full and 5 Half M-LOKA(R) 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 Full Size MP5 and Clones and Compatible with Most Collapsible and Fixed Stocks (NOTE: WILL NOT WORK WITH MP5K/SP5K Clone models) US PAT. 11656059