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Matt Peck · January 13th, 2014, 22:03

Hey all, just picked up a madbull 12.5 ris for my KWA LM4 and of course the barrel nut doesn't fit. The nut barely catches the threads on the upper, even with every speck of paint removed. Everything grinds to an immovable halt in 1/4 turn. So.....
I need some help with cutting the threads on the barrel nut to fit. If anyone knows the proper tap size to use Id appreciate it. I plan to cut the barrel nut only, and leave the upper stock.
Alternatively, i hear madbull has 3 other noveske style barrel nuts but none are labelled for kwa specifically. If anyone has tried one that has fit an lm4, let me know.

January 13th, 2014, 22:03	#1
Matt Peck Trader rating Join Date: Jun 2011 Location: Halifax	Noveske compatibility with lm4 Hey all, just picked up a madbull 12.5 ris for my KWA LM4 and of course the barrel nut doesn't fit. The nut barely catches the threads on the upper, even with every speck of paint removed. Everything grinds to an immovable halt in 1/4 turn. So..... I need some help with cutting the threads on the barrel nut to fit. If anyone knows the proper tap size to use Id appreciate it. I plan to cut the barrel nut only, and leave the upper stock. Alternatively, i hear madbull has 3 other noveske style barrel nuts but none are labelled for kwa specifically. If anyone has tried one that has fit an lm4, let me know.