I've dry fired most of my handguns hundreds of times and have never had a problem. It's good practice on trigger control IMO if you can't get down to the range. I always dry fire at the gun store, because if I'm about to spend big money on a weapon I'd like to know what the trigger feels like, if the trigger sucks I'm not buyin it.
I try not to dry fire rifles, but when I was in the Army we did our M4s thousands of times and never had an issue of failure to discharge a live round afterwards.
So I'm in the boat with if I have dry fired my Sig as well as putting around 15000 - 18000 rounds down the barrel without a spring change there not much getting hurt. But it probley due for a check. Just my 2cents.
I would not use the Army model for small arms care. I would never let someone shove a metal cleaning rod down the barrel of my AR and slam the bolt face.
