Which manufacturer of Ar-15s do you work for?
Dude seriously? You stated that "all" of them stake them so how can you ask HIM that question?
+1Colt.
I What are you trying to add up Yukon? Please inform me why you have to point out minor deatils?
I gotta agree with that, I dont like the trigger on my DPMS but i plan on changing that.
Some of the things that make one better than the other you can't see with the naked eye. Also, you will see NO noticable difference in accuracy from the upper/lower fit. If you can you are an amazing shot and should be on the olympic team or something.
Out of the choices you listed I would rank them as follows....
S&W
Stag
RRA
DPMS
Bushmaster
Oly
But we all know my opinion is biased.....
Edited to add.... Things you should look for that make a difference in price/quality.
Do they MP/Pressure test their bolts? Do they park under the FSB? Do they use F marked FSB's? Do they stake their gas keys? Do they offer 1/7 twist? Do they offer chrome lining? Do they offer M4 feed ramps? Do they have a proper 5.56 chamber? Do they offer H buffers? Do they use mil-spec buffer tubes? And so on...
You cannot judge a rifle by it's "fit and finish".