Kokmrade u might wanna consider the CYMA wood version hehe. Just a thought. testedmine with my friend yesteray it kicks ass! Screw the m4's hehe. (mejo biased eh ano??) but seriously you might wanna check out the CYMA/ got mine with metal bushings installed OTB.
Komrade Zentaurus:
update on my Maria.
Installed a Hurricane AK FTK with stock gears and a Firefox Li-on battery here are the results:
Groupings were better (just cant post any pics coz they were all apologies from the people i hit yesterday morning)
FPS is at 425-430 fps with an m120 spring (magalinglang siguro ung gunsmith hehehehe

pero in all honesty bang for the buck ung Hurricane na FTK)
Next project is to install a tight barrel, deepfire piston body and CA gears na lang. 450 lang kasi limit sa Nissan LP. sayang naman kung mag infinite pako nakabili nako ng battery, My mistake nga eh coz we upgraded a JG Ak47 tac with SP140 running on stock battery but with Infinifte Gears. Syang coz i wanna make my Ak a real suchka!