P90 will not fire
 

I'm in the montreal area so if anyone would like to take a llok at it?!?!!?

I did the J battery mod and the gun does not fire anymore, It just make a littele click when I pull the trigger

Thanks
Lt_Crazy

If all you did was changed the battery, stupid question but is it charged?

I'm betting your battery's either not charged or the polarity is flipped somewhere... battery connector is flipped, or motor is in backwards or something.