It was a decent movie, but there were quiet a few ridiculous scenes in it. My wife's a doctor, and she made fun of all the "do it yourself" IV scenes. I made fun of some of the improbable shooting scenes (sniping multiple targets in moving vehicles at 1000 yards, shooting tin can at 600 yards, and a few others I can't think of.)
The old Tennessee gunsmith was great though.
And there is a big flag display mistake - there's a scene where he's walking out of a big gov't airplane hangar of some kind - the Stars and Stripes is hanging backwards on the wall - they have it hanging vertically with the field to the right.
But again, it was enjoyable, and if you can willingly suspend disbelief, I'd recommend it.