Could be.
Yes
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)
Type recommended by the maker of the airsoft.
Don't buy crapsoft at Walm$%^. Go online to a reputable airsoft dealer and get something half decent. Also, do not buy bbs there, they suck and will break your gun. Spend $15-$20 per 3000 bbs and it will save your gun. Do not buy cheap yellow bbs.
The stinger p9 is good with .12 gram airsoft BBs or you can use .25 gram bbs but then it will decrease the range.
You can find them for decently cheap. (Even though they will always be more expensive than normal bbs.) However, the cheaper they get, the worse grade they will be, making them jam in your gun, and altogether horrible for it. The alternative to Paintball bbs, are marking bbs which are coated in a layer of chalk, which mark as well as paintball bbs and wont jam.
No. .12 is the cheapest bbs. They have the least pain to the hit, the least length to the hit, are more vulnerable to swerving from wind, and cause the most errors and jams in your gun. All professional grade bbs are at least .2 or .25. I highly recommend getting at least .20, not .12.
You must first diagnose the area of the problem. Try a different battery, magazine, or bbs, if it continues to not work, check the internals for jams. beyond that, check videos for this problem or go to a field and get it looked at.
you can not use metal bbs in airsoft guns at all. they are not compatible because they are both built differently.
No, if you are talking about bb's for a BB gun. The BB's for an air rifle or BB gun wont even stay in a Magazine for an airsoft gun. Airsoft BB's are 6mm, air rifle bb's are much smaller. You will ruin an airsoft gun with the smaller metal bbs. But you can get aluminum 6mm pellets for an airsoft gun.
no
Because it is a toy gun and cheap