The cheapest decent gun of that kind I know of is the Marui VSR-10.
I own a Super 9, got it on a whim. All the reviews are right, it is crap.

If you play anywhere that you could be seen by the public, even by chance, you're being dumb.

The super 9 has an impressive range for its cost, and will shatter into its base components if you cough on it. One way to please both your neighbors (if any) and the people on this forum is to ask the people in the vicinity of your house if it's ok to play. Either that or find gamelands where nobody cares.

okay , now i only have one more thing whats the difference between a bloback pistol and a non-blowback pistol. And which one do you prefer to use as a sidearm.