This is a cool product!

My compliments for designing it to take a padlock so the user can choose a security level. A problem with most gun locking systems short of safes is that they use cheesy key locks. Some even use the standard ACE137 center pin oriented tubular lock that has been totally discredited for security (if you have trouble getting the BIC pen trick to work, google "tubular lock pick"). Others use the Simplex lock with only 1085 combinations, unless you use the undocumented half-press mode, and you don't want to have to manage that quickly under stress.