Custom 360 brass safety for Crosman 2240, 2250, 2300KT, 2400KT, PC77, 1377, 1322, 1300KT, 2289G Backpacker and related models with the same single-stage pistol trigger group. It's dimensions are slightly different to fit and function better than the original plastic safety for Crosman pistols. In some cases you may need to remove burrs or excess paint from inside the hole in the trigger frame, otherwise it may fit too tight to engage with the trigger. A 2" square of 300-600 grit wet/dry sandpaper can be rolled into a small tube to use as a deburring/reaming tool, it can be inserted into the hole and twisted to remove excess material. Don't clean it out too much or it will fit loose, you generally don't want to remove all of the paint, just the high-spots. This should be done with all parts removed from the frame which should be cleaned thoroughly before assembly.