Originally Posted by tjhimes
Would a G&P m4 be good, I'm thinking about getting one and it's relevant.
Just because it happens to be similar doesn't mean its relevant, the post is about what gun the OP should get, if you would like some opinions on your own then go make a well constructed threa in the "what gun should I get?" section.
To the OP, with any of those guns you should get an intellect 9.6v, probably around 1600mah or 2000mah. It really depends on how much you shoot to say how long it will last in a day. And also make sure to get a smart charger so you don't accidentally fry your battery xD