Arms Locker 2.1 is an updated version of the original Arms Locker. This program enables you to record all the important information necessary to keep track of your firearms, ammunition on hand...including notes of your handloaded ammunition, and also provides for keeping detailed notes on how your performing on the range. Version 2.1: As per our customer's requests, we've cleaned up the GUI and we've also improved the runtime of the application to increase performance as well as reducing the program's size.