Here are lower parts kits I've used with out any real problems:Originally Posted by 7idl
Bushy
DPMS
RRA
J&T
J&S
FN
Colt
Olympic
Model 1 Sales
M&A parts
Eagle Firearms
Stag
There are very small differences with some.....like a take down din detent being a little long and really tough to install in the front take down. I have had a trigger pin or take down pin a little too big in diameter....but never too small. I have never got any plastic parts from anybody.
There are definately a few more manufacture's of parts when you closely inspect them, not just like the 2-3 companies that make the reciever forgings. I wouln't say one is better or worse, all can use some tuning; just not slapping parts into a reciever.
My general choice if who ever has the best deal is who I purchase...I don't worry about brand....they probably and most likely have nothing to do with the quality of parts they are selling anyway.....except Olympic who rolls their own.