Nowadays,with the machinery they've got,they just have to punch in the numbers and they can copy any gun's blueprinted part.As long as the steel is of good quality,it'll spit out a good part.
Heck,last week,I got my Colt Gold Cup outgrouped by a $400 Norinco.I tried it(the Nork)afterwards and while I must admit my trigger was a little nicer,I think I can bring the Nork's trigger as nice as my GC.
I was stunned and I think Mr Sam L.Colt was!