There are many possible problems which could result in your gun not shooting. These include but are not limited to: faults in the wiring, stripped gears, bbs jammed in the barrel, or a bad battery connection.
A pump airsoft gun is a gun that has to be pumped every time before shooting. Ex. Airsoft shotgun
No
almost every gun for airsoft uses a 6mm (milimeter) BB. try that.
yes
A person can buy airsoft rifles from an airsoft store, gun store, and a sport store. They are all reflective cheap in every store depending on the model you wish to buy.
Yes
An outside organization hosts Airsoft games at Cousins in Manchester NJ every other weekend.
yes *edit* every gun can.
Rate of fire or how many BBs come out every second.
A good team that plays and wins matches often like every so often a month and play against local teams. check out rainbow airsoft or death core airsoft on youtube to see what kind of teams you need
Yes, every airsoft gun can fire any gram of BB, although .12g BBs wont be that effective in a sniper, try .25g or even .3g.
Take it off safe located at the left side of the gun above the trigger. Or if it is off safe and still not firing don't worry turn it upside down. If it fires then don't worry it's the clip not the gun, you just have to break in the clip. Which means firing it multiple times every five or ten minutes. It should work in a little bit.