The U.S. military torture test/trials can be taken with a grain of salt. A platform's overall reliability has to be averaged over a much larger number of firearms than what the U.S military used to come to the conclusion. A little known fact about the U.S choice of the 590-A1 over some others was nothing more than price. In my experience Mossberg shotguns tend to have more initial cycling problems than most other brands. Like I said earlier the shellstops (being too long) also plague many of the pump guns, mostly the 500 and Maverick models. The 930 semi-autos don't have a very long lifespan. They were designed for the average hunter than fires an average amount of ammo, meaning less than 200rds a year. Most hunters/shooters couldn't keep track of round count if their life depended on it and grossly over-estimate the actual number...200rds becomes 1500rds. The 930's reliabilty disappears by 5000rds and many examples I've seen never made it to 3500rds. We aren't talking full-power loads here either, these were trap and sporting clays loads.