This 5-3/4" polymer rail has 14 slots and can be used on most tactical rifles to mount scopes, grips, lasers, flashlights, and other components. It has 6 mounting holes and comes complete with 4 allen head bolts and threaded slim line nuts. This durable, yet strong polymer constuction will keep your components mounted securely without scratching the surface of most weapons. Easy installation. (other parts sold separately)