Hello all
Is compressed air the same thing as nitrogen? I've heard of them being different but I think they are the same. not sure.

Compressed air is the same as high pressure air, nitrogen system, HPA, etc

The air you breath is about 78% Nitrogen, 20% Oxygen, 2% CO2 or misc. So many people call compressed air "Nitrogen" because it's mostly nitrogen.

Mike from techpb also best explains the differences between CO2 and HPA systems. Link is below:

http://www.youtube.com/watch?v=alc0650GY0w

Thanks for the info.