Echo 1 brand Stag-15. Wired to the front with tamiya connection. Battery goes in the peq box. It takes these kinds of batteries or any one small enough to fit inside: https://www.evike.com/products/50320/ Comes with the 300 round hi cap that came with the gun. Shoots around 300-350 fps Full metal internals and body Comes with all attachments you see on it