Heres a kicker.....
Madbull RIS, does not fit my PTW, does fit a stock TM receiver = metric
G&P RIS, does fit PTW, unknown if it fits TM but fits G&P = standard
King Arms RIS, does fit PTW, DOES fit a stock TM receiver = !?!?
I know the PTW is standard threading and I know the Madbull RIS is metric thus the incompatibility. But the KA one fits standard and metric threading....is it just a loose thread thats compatible to both? When I tightened the KA barrel nut with a barrel wrench it was just as solid as the stock PTW barrel nut so I figured its not too loose of a thread or it wouldn't be able to be cranked on that tight.
A heads up for PTW owners at least, both G&P and King Arms threading will fit PTW's, Madbull will not.
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