6mm
airsoft uses 6mm bbs. Perhaps you are talking about weight? .20 gram is good.
.25 Airsoft bbs can be good. Their weight is very good for accuracy and helps for a harder hit from the bbs. However, no bb is good if they are not high polish. Companies like Madbull and Matrix make good .25 bbs.
6mm (millimeters)
The stinger p9 is good with .12 gram airsoft BBs or you can use .25 gram bbs but then it will decrease the range.
yes they are very accurate
It can pretty much take the same thing other airsoft guns, .12 gram, .20 gram and so on.
6mm of either .12 or .20 gram bbs. 6mm of either .12 or .20 gram bbs.
it was 3'4 ft long.
Airsoft bbs are made up of plastic and are 6mm in diameter and are .24 cal, BBs however are metal and are .177 cal (4.5mm)
You can buy airsoft paintballs, but they're the size of a small pellet and I've had a hard time finding them. Technically no. There are NO paintballs that work in an airsoft gun. The answer above was partially correct though. They make marker bbs that are basically bbs but they have paint on them.
Type recommended by the maker of the airsoft.
All airsoft guns can shoot .12g bbs. However with more powerful guns, heavier bbs are recommended for better accuracy