piston jam on my m4

[josh2516]

Re: piston jam on my m4

hey guys. everytime i try and fire my m4, the piston is jamming back, but not all the way. it doesnt want to come all the way back. it comes to about a quater the way over the spring guide and then stops and just makes a clicking sound lke a dead battey (the battery is deffinatley not dead. ive tried numerous motors. opend it over 15 times and just cannot diagnose a problem.

can anyone help??

Just out of curiosity was this an APS CQB M4 ? as i'm having exactly the same problem.

[Genesius]

Re: piston jam on my m4

I had the same issue on an SRC, turned out I'd done the lowest 2 gearbox screws up too tight and they were stopping the anti reverse latch and bevel gear from moving. A quarter f a turn off and the gun fires perfectly.

Oh, I could turn the gets with a screw driver through the side of he get box, so even of thy move it ou,d till be that.