Get some RiotSC gears and a terminusx motor. I would also upgrade to a lipo. Then, elongate your barrel window and install an ER-hop. I would recommend a madbull 6.03 V2 barrel for this, though, I have had a little bit better luck on those. One more thing, use the stock barrel length, or maybe as high as the mid 400mm, but not too long, after about 450 for most AEGs and about 509 for most BASRs, the extra length is just not helpful at all.