So I've gotten to the point where I have two 16" uppers and I started to look at SPR type uppers and shorty uppers.

I don't shoot over 300 yards all that much and I know if I get an SPR it's going to be a spend fest because I'll put a stupid expensive optic on it. That being said I'm in the military and don't want to deal with the pain in the ass of moving to a state that doesn't allow sbrs so it will be an AR pistol for the time being and eventually an SBR.

What do you think of 7.5" uppers compared to 10.5" uppers in terms of reliability only not accuracy or velocity. I'm actually looking at Raniers 7.5 http://www.rainierarms.com/?page=sho...roduct_id=1095 and their http://www.rainierarms.com/?page=sho...roduct_id=1361