Portable air compressors are rated by the volume of air delivered at 90 pounds per square inch (psi). This number is ...

When buying a nail gun, you may also want to consider a pneumatic gun. Also called air nail guns, these models are powered by compressed air. The compressed air delivers increased power.

All you need to know is that nail guns come in two distinct, common flavours (four if you count the corded ones, or those that require compressed air): the brad nailer and the finishing nailer.