Instruct: Classify an Amazon review into positive or negative sentiment.
Query: Be wary of these BBs

So these BBs don't work in my gun. I bought a good AK-47 all metal and metal gear box. Basically because they are not highly polished when the BBs try to feed into the gun from the magazine they get stuck and won't be fired out the barrel. They also don't work in the pistol I have unless you cock it upside down. I would suggest getting Bio BBs that are highly polished. They are the same price and will actually work. If you are interested there are highly polished BBs on [...]