2020 shotgun rib tester

grabcad

Each block requires two strategically placed magnets - one measuring 6 millimeters in length and another measuring 10 millimeters in length. The versatility of this block allows it to be utilized on ribs with diameters ranging from 6 to 8 millimeters or up to 10 millimeters wide. When the shotgun is properly seated, a clear view of the front sight becomes apparent.