Upgrade your AR platform with Geissele's MK16 Super Modular Rail. The Mk16 is easy to install, but offers excellent rigidity thanks to anti-rotation tabs and set screws - ensuring the rail will not rotate even under extreme conditions. The MK16 Super Modular Rail is equipped with a full-length picatinny rail with more than enough space to accommodate optics, iron sights, and clip-on night vision/thermal devices. Further customization can be achieved with the MK16's M-LOK attachment points in every quadrant, perfect for adding tactical lights, lasers, fore-grips, and other accessories. Features: Anti-rotation tabs and set screws ensures the rail will not rotate even in extreme conditionsFull-length picatinny railMultiple M-LOK attachment points Geissele 10.5" M-LOK MK16 Black Super Modular Rail 05-1073B