What is the difference between Picatinny and Weaver?

Picatinny and weaver are first used in firearms as mounting platforms. These rails are used for several accessories like laser aiming devices, reflex sights, bipods, night vision, bayonets, tactical lights, and foregrips. These two rails might have their common uses, though, but they have certain differences. The significant difference is in the width of the recoil groves and the placement. When it comes to its groove width, Picatinny is larger than weaver. Picatinny has a .394-inch center to center width, and a .206-inch wide groove.

Considering the center to center measurements of the weaver, it’s not consistent from one groove to another, and it has a.180-inch wide slot. The groves in the Picatinny are consistent from a point to another point. Because Picatinny has a more massive groove than a weaver, the Picatinny system cannot be fixed into accessories that accommodate weaver systems, but weaver systems can be fixed into accessories that accommodate the Picatinny systems.