[Hectic]

16:1 gears, bearing bushings, bearing spring guide, merf 3.2 installed in the 3 wire method) and an 11.1v 25-30c 1600+mah lipo and a sorbo pad to correct the aoe, should give u good trigger response. In my mp5 with an m90 spring its near instant and runs about 28bbps.
a heavier spring will reduce that a bit