Magpul Industries M-LOK Rail Covers Type 2 Half Slot, Fits M-LOK Compatible Systems, Low Profile Design Compatible with Full and Half Size M-LOK Aluminum Handguards, Black MAG1365-BLK 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 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. The M-LOK Type 2 Half Slot Rail Covers features beveled contours to minimize potential snagging" their TSP texture for additional grip" and protruding just 1/8" from the mounting surface to maintain its low-profile. The center locking tab is pre-scored to allow the user to snap off sections and mix and match colors for a customized look. Includes four panels" each covering half an M-LOK slot. Not compatible with Magpul MOE M-LOK" MOE SL and SGA forends" and may not be compatible with free-float handguards that have a wider and flatter profile; they will not seat deep enough to allow the center portion to lock in. Made in the USA.