Can play 6 hours without refill and is 3/4 full!
Fit perfect with my my M4
Dream with electric motor(no winding)
Can be used on manuel (winding Wheel on bottom)
Heavy when is full
Rattle( is a big high cap)
My mine the electric motor work only one day!!!
Good purchase but the electric motor is a bulls%&?&!
Maybe i'm bad lucky but is probably better to purchase manual to save money!
Rating: [3 of 5 Stars!]