i just got a conversion kit............and it fit with no alteration ............on my np34 / p226 copy ----was a tad tight but slide went on and with a bit of oil and working back / forth is fine, i then assembled barrel and entire upper went on and functions ( dry fire at home ) a-ok..........will test fire sunday afternoon at range .
my norinco is quite old not the newest model that mite be the reason ??
or
i simply lucked out .