Several that I suggest.
Benjamin EB22. It a .22 caliber single shot Pistol. Excellent quality.
Crosman 2300S or 2300T. but they are expensive
Crosman 2240 is more affordable
Crosman 2250 with shoulder sock and scope
or
Walther PPK/S bb pistol. Pure fun, Feels real but not Accurate.
or any of the Walther's pistols.
stay away from Daisy or Marksman.
I own over 70 different airguns.
See the link below for airguns and read the reviews.
Try Sporting good stores or the web. Tyr Pyramydair on the web
Please state the current condition of the pistol to get an estimate of value. Give it a rating like Poor, Fair, Good, Very Good or Excellent condition.
If you are asking about the Crosman C02 pellet pistol then Yes that is what it is designed to power the pistol.
No.
the M21 Colt 1911 is quite good even though its spring
No "good" pistol like that exists under 50 dollars.
12g,
It won't fit in the pistol.
Get the pistol, preferably a 1911, you get better velocity, and a smaller easier to carry pistol.
The c11 co2 pistol shoots at 480 Feet Per Second (FPS)
no it will ruin your gun if you do
It is not possible to give you an estimate of value without more information about the condition of the pistol. You need to give it some sort of rating like Poor, Fair, Good, Very Good or Excellent condition. With out that minimum information I can not answer you.