The UTG PROA(R) Forerunner 17" M-LOKA(R) Free Float Handguard, Black rail forend includes M-LOKA(R) Picatinny Rail Section, QD Sling Swivel Adaptor, Installation Hardware, and Barrel Nut Wrench. This 17 inch M-LOK Free Float handguard features 31 M-LOKA(R) Slots Across 3 Slot Tracks for Mounting Accessories with an Additional 4 Slots at the Front Along the 45 Degree Tracks and it is precision machined from 6061-T6 aluminum and matte black hard coat Anodized.