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Curtis Tactics · February 7th, 2007, 18:11

I plan to upgrade my p90 with a m4a1 length tightbore (6.04) barrel, a SP85 spring with steel bushings. overall that brings the fps to about 317.5 fps
my question is will a 8.4V battery suffice?
also about shims i watched the mechbox.com upgrade video, they talk about the spacing of the gears. after i install metal bushing, will replacing the old shims be fine or do i have to add more or remove shims to get the right spacings?
thanks in advance Curtis

February 7th, 2007, 18:11	#1
Curtis Tactics Trader rating Join Date: Sep 2005 Location: Coquitlam B.C.	P90 upgrade question I plan to upgrade my p90 with a m4a1 length tightbore (6.04) barrel, a SP85 spring with steel bushings. overall that brings the fps to about 317.5 fps my question is will a 8.4V battery suffice? also about shims i watched the mechbox.com upgrade video, they talk about the spacing of the gears. after i install metal bushing, will replacing the old shims be fine or do i have to add more or remove shims to get the right spacings? thanks in advance Curtis __________________ "Fight fear. Fight distress. Fight chaos. Fight with the Canadian Forces."