M-LOK Type 2 Half Slot Rail Covers are low-profile, two-piece covers that install directly onto most full and half size M-LOK aluminum hand guards (not compatible with polymer hand guards). Designed to work in conjunction with full size M-LOK Type 2 Rail Covers, Half Slot Rail Covers can be used to fill extra space left by full size Rail Covers and other accessories?-allowing for more customization and coverage of your hand guard. M-LOK Type 2 Half Slot Rail Covers are non-orientation specific, which allows the user to mount them in any direction desired without affecting function.