The original design and quality of the Magpul MOE handguard is now even better! The new MOE M-LOK handguard is fully compatible with all aftermarket M-LOK accessories and rails. It replaces standard plastic AR15 mid-length hand guards and is compatible with both 'direct impingement' and most piston-driven gas systems. Easy to install, the guard utilizes the existing delta ring and round or triangular front hand guard retaining cap. It features M-LOK slots at the two, six, and ten o'clock positions for mounting MIL-STD-1913 Picatinny rails or other direct-attach M-LOK accessories.