Hey Tango R., they didn't call me "black thumb" for nothing. The Pentagon hardly ever asks me for advice any more and I didn't serve, so my opinion is just that, an uninformed opinion. I don't think they should have switched in Viet Nam, a semi-automatic encourages more deliberate aim. I have read that in the excitement of combat a lot of men didn't even shoot at all or shoot at the sky. I do know that in the War of Northern Aggression they would recover muskets with 6 or 7 bullets still in the rifle. Men would load, think they fired and then repeat. Fairly often men would shoot their ramrods. Believe me, I mean no disrespect to men who have "seen the elephant."