Chinese lower to USA upper?

Yes better than most north american made ones. I just bought a canadian made ar and no upper is good for its lower and no lower good for its upper very tight had to punch out the takedown pins but on norc its easy to separate lower and upper and interchange with other ar brands
 
Yes better than most north american made ones. I just bought a canadian made ar and no upper is good for its lower and no lower good for its upper very tight had to punch out the takedown pins but on norc its easy to separate lower and upper and interchange with other ar brands

What?
 
Yeahh I own a colt 6920, NEA 7.5" and a norc 14.5" colt upper fit on the norc perfectly but nea didnt , colt upper didnt fit nea lower but norc upper did hardly on the nea lower , norc upper fit the colt lower but nea didnt, its weird how the nea upper hardly fits in nea lower too and bla bla bla but norc has this shiny black paint look on it but it doesnt go away. A little wobbly like AK47 but functions like it supposed to ,
 
Ditto. My Alexander arms upper fits my norc but not the NEA. I don't believe the channel in the receiver is milled quite wide enough.
 
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