The Gray Ops CNC Shooting Bag Stop was designed to give shooters the ability to "load" into their shooting bag while also preventing any contact to the mag which can cause feeding issues for the rifle. This is especially helpful for 22LR actions to feed reliably.FeaturesMounts directly to any 1.5" arca rail via integral clampDoes not need to be "slid off" the end of the rail to removeOne steel hex bolt for installing/removing or repositioningMachined from 6061 aluminumBlack anodize finishLength designed for standard 10 round and extended magazinesWeight - 2.6 ounces