SIG MPX Specialty Handguard utilizes standard factory mounting points and hardware, which means no modifications to your firearm. Precision CNC machined hard-anodized aluminum lightweight construction offers rugged performance without weighing you down. The slim design remains true to the unique lines of your MPX rifle but provides a build-in Picatinny top rail and seven planes of M-LOK mounting surface to accommodate today's modern accessories. Features 8 planes of mounting surface with seven rows of M-LOK slots, drop-in design and uses manufacturer's mounting hardware.