A 645 was my first duty gun also and the gun I used to outshoot everyone else in the reserve peace officer`s academy back in the old days when we still qualified out to 50 yards. During the malfunction drills when your neighbor would load your magazines with some combination of live rounds and empty casings, my 645 never did jam up and swallowed the empties as easily as hardball. I only knew I had am empty in the chamber when I`d get a click instead of a bang and all I had to do was rack the slide to be back in business. Looking back it`s hard to believe I didn`t own a 1911 at that time which is what I used later at the full time academy and ever since for duty when I wasn`t carrying an N frame or a Colt Python. I have a pair of 645`s and may not carry one anymore but I still like `em.