A Weaver rail for firearms is a type of mounting platform that provides a secure place to attach scopes, sights, and other tactical accessories. It consists of a base that attaches to the firearm and a set of rails that extend from the base. The rails are numbered to indicate their length and width, with each number corresponding to specific dimensions. The Weaver rail is compatible with most rifles and pistols, including AR-15s. It is easy to install and provides a secure fit that won't move or shift during recoil. With a Weaver rail, you can easily add or remove scopes, sights, lasers, and other accessories without having to repeatedly re-zero the firearm. This makes it an ideal choice for shooters who need to quickly switch between different optics. Additionally, Weaver rails are incredibly durable and can withstand extreme recoil forces. All in all, Weaver rails provide a reliable and secure platform for attaching tactical accessories to your firearm.