The all important Bubble level attaches to any 20mm wide weaver/picatinny base rail to ensure bore and reticle alignment at a glance.
also used for long range shooting to make sure your rifle is level
Use in front of, under or behind scope depending on your set up and preference.
Anti cant - Make sure your scope is absolutely level
Shock proof - can be used on real fire caliber as well as air rifles
Rail not included
Most of the time they come with any of our tactical semi or full custom range of rifles