New XTR Signature Rings were designed for the tactical shooter. They deliver plenty of holding power" with less weight. Each ring set includes one set of the +/- 0 MOA concentric" one set each of the +/-5 MOA and +/-10 MOA" and two sets of the +/-20 MOA. With these inserts" it is possible to make 0" 5" 10" 15" 20" 25" 30 or 40 MOA of cant in the scope mount.

Features:
Corrects misalignment caused by off-center receiver holes
No need for expensive tapered bases or shimming for thousand-yard shooting