KAC-Knight's Armament Picatinny Rail Mount Anti-Cant DeviceKnight's Armament
Knight's Armament Picatinny Anti-Cant Device
Picatinny rail mounted bubble level lets you know if the rifle is canted while shooting. This is especially beneficial with long range shooting where a canted rifle can drastically change where shots are impacting. Unit sits approximately 0.360" above the top of the picatinny mounting surface.
Replaced by the Gen 2 version, available here.