I may revise this some point soon but i only just recently got the backup gun, but i continue to put all my practice and match rounds on the first gun, live or dry. i keep round count and session notes snd swap springs and such as needed but i figure the backup is just a backup. Least this way I got a real count on the gun getting beat up, and replace parts, then if a back up is needed in dire straits i know its truly a fresh gun and parts? Idk