Machined from 6061-T6 aluminum with matte black anodizing, the UTG PRO AR15 Super Slim M-LOK 15" Drop-In Handguard for carbine-length gas systems utilizes the mil-standard delta ring and A2-style gas block and sight. The clamshell design preserves access to the rifle’s factory sling position and bayonet lug. Picatinny rail runs the full length of the handguard and with it comes 45 M-LOK slots. Included is a section of rail with eight slots and a quick-release sling cup, both designed for use on M-LOK rail. Price: $130. Contact: Leapers, Inc.; (734) 542-1500; leapers.com.