Most elbows should twist on the regulator. If it does not, your best bet would be to weld it on, or send it back to the manufacture. Luckily though elbows are meant to be replaced after some time so the task should be manageable.
There is no reason to put a paintball gun in a refrigerator, or any appliance for that mater.
Disassemble the gun, and replace the back cap with the stock or take it to a paintball store, and ask them to.
The purpose of a paintball gun is to fire paintball pellets, to mark opponents in the game of paintball.
Have a degree in chemistry. Do not put anything in your gun besides air-tool lubricant (for mechanical guns), or actual paintball lube.
A paintball marker is a paintball gun. It is just called a marker instead of a gun.
you screw the adapter into the gun, and then the co2 cartridge.
No. The state of Ohio did not invent the paintball gun.
No, do not expose your paintball gun to water.
it depends on the model.
A paintball gun is several magnitudes stronger then a Nerf gun. A paintball travels at around 200 mph, where a Nerf gun is around 10.
11 to play at fields, 18 to buy a paintball gun.
yes. you can ship a paintball gun anywhere.