This is one of my recent project guns that I am pretty much finished with the base. I started out with the prokit and mixed and matched parts from there. I have installed a 6.04 inner barrel with a g&p hopup assembly and currently it is shooting around 30 rps with an 11.1 15c Lipo. Currently I am hitting 350 fps on the dot. Internally, I have the g&p m120 high speed motor, I have the stock g&p outer gb shell, I have jg gears and piston, the stock wiring, and the stock cylinder and cylinder head.