Vortex Optics Cantilever Ring Mount with 3 inch Offset ADR Mount for 30mm Tubes
http://www.amazon.com/gp/product/B00546B996?tag=sukses2015-20
Does not require proprietary tools for adjustment
Can be adjusted with your finger or a flat blade screwdriver
Lever can be configured to lock to the front or the rear
Superior clamping surface to insure maximum rail engagement
