crusty Posted May 16, 2013 Share Posted May 16, 2013 Just after some advice & opinions if possible, I have a King Arms P90 that i am looking to slightly upgrade, i have put an 80mm suppressor on it so with the standard inner barrel length of 247mm + 80mm suppressor length am looking at up to about 327mm inner barrel length, i was wondering if the Massada barrel at 318mm will fit ? also what hop & spring would be best suited to run up to 350fps ? Thanks in advance Link to comment Share on other sites More sharing options...
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