Bubble Level Vector Optics Offset Weaver/Picatinny GenII 21 mm

This Vector Optics Offset Weaver/Picatinny GenII 21 mm bubble level allows you to keep the rifle perfectly level, so you can go for absolute accuracy. That’s because keeping your gun perfectly straight is of paramount importance while long-range shooting, to affect the projectile’s trajectory as little as possible. This Vector Optics GenII Offset bubble level protrudes from one side of the frame, so it is visible at all times after mounting it onto a 21 mm Weaver/Picatinny rail.