Originally Posted by no username
will the mp5 sd be as accurate as the rk47? I don't have a degree in physics I am not sure about how barrel length affects accuracy, I like the mp5 better, but I want the best accuracy possible
Barrel length effects accuracy, but not as much as buying a high-quality tigh-bore barrel.
If you want the best, Buy a prometheus barrel. They are expensive, but well worth it. You can get them from ehobbyasia.com. If you dont want to spend that much, buy a systema or a madbull barrel.