Rainier Arms BCG? GTG?

tomcat mv

Sergeant
Full Member
Minuteman
Jun 27, 2011
137
2
74
Rainier has their brand of BCG on sale for $99. It is phosphate and MPI tested. Anyone have experience with these? I have been wanting to pick up one for a spare.
 
I've got one that came with their upper combo. I cleaned the shit out of the bolt, carrier and upper, lubed it up and it's got about 300rds on it now. Seems gtg and I'd pick one up for a spare without hesitation.