Oculus Quest Pistol Repaired

This is a remix of the excellent pistol design by Amohren. I had issues with the original model. There was a lot of bad data and extensive cleanup required after printing to get things to fit together. I improved some of the fit, though left tolerances tight so that you can choose how tightly you want things to fit together. I also made it easier to print the barrel with limited supports and improved its overall strength. I had a lot more luck getting things to fit together and stay together after these revisions.