Gas or Electric
 

I'v been seeing these full metal realistic airsoft guns. M4s, M14, M249 etc etc. My question is are these gas,electric, or a mixture of both(some gas some electric.)

It depends on the model and make. However most full sized guns are Electric. The electric ones are often known by the acronym AEG which stands for Automatic Electric Gun. Handguns will often be gas powered and are usually known by the acronyms NBB or GBB, which stands for Non Blow Back or Gas Blow Back respectively.

Your head resembles that of a chicken.

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My dog likes pancakes.

And the FAQ's will answer the original question.

edit: bored, here. http://www.airsoftcanada.com/showthread.php?t=29