The Super Modular Rail MK7 is the first CMP-legal rail system that was designed specifically for National Match High Power Competition. The MK7 features a full quad rail, with the sling loop in its appropriate legal location for competition. The sling loop is attached to a steel bar which is fastened directly to the rail using screws to increase weight.
Big Book Catalog, Issue:73, Page:065
Includes: Barrel nut, barrel nut bolts, sling loop, sling screws and hex keys, instructions