[Mindcrime13]

hello

i just build the gearbox of a JG Mp5 , i put the following upgrades:

Guarder sp120 spring
Guarder aluminum ball bearing piston Head
Hurricane cylinder head
guarder air seal nozzle
G&P polycarbon Piston
Ball bearing spring guide
7mm steel bushings

for battery: 7.4 25c 1800 lipo

i still do not have the tightbore and bucking in, but with those upgrades i listed above, i still cannot penetrate the bottom part of a coke can, it dents it really good even breaks a bit, but does not goes trough, im using a coke zero can if that matters, it does goes cleanly side to side

is this normal for those upgrades?, or should it anyway break thru the bottom of the can without the tightbore and bucking, ??