End Cap For Plug Spinner Button

This was an idea proposed by MaccLocksmith over on Youtube. Its an end cap for the spinner button to stop the spring from poking past the button over time. I'm adding this as a separate thing since I haven't had a chance to do any testing on the idea yet, but wanted MaccLocksmith and anyone else to be able to play with it in the mean time. I designed the end cap in two pieces with solvent welding in mind and realize writing the description that I could just make it one piece . . . so anyway here's both.