i got a similar problem with mine, it will barely shoot 10 ft before the bbs start arching down.
i tried it even with a 390 fps spring that i had lying around and it didnt affect nothing - shoots just the same.
i opened the (stock) mechbox, and everything looks fine. im thinking it might be a hop-up issue now, but i pretty much gave up on it... trying to find a good gun-doc...
|