Airsoft pistol help? My first gas need help easy 10 points?

Airsoft pistol help? My first gas need help easy 10 points?

Ok so i want to get a c02 powered pistol as a secondary here’s the thing im also ganna be carrying a knife if it gets to cqb in a tactical knife style. My vest also has a pistol halster great for the gun only thing is I had to buy alot of airsoft gear for my friends so ill only have around $50 to spend I want it to be c02 or green gas (prefilbly c02) and have a real size clip not one of those tiny stick things and if possible be able to buy more mags would be great thanks