You probably have a Mk. I pistol, manufactured circa 1958. If this is the case, it would be a semi-auto pistol, chambered in .22 Long Rifle.
11.2 inches in 9x19 parabellum
18 years
Small inexpensive pistol
How much is a old black powder only 45 cal long barrel pistol worth?
There are several factors that effect "HOW LONG" is. Temperature, How fast you pull the trigger. and how long the "powerlett" is in the pistol. It is best to say about 50 or more shots per powerlett. However never leave the C02 in the pistol when you are done. It will eventually leak out and may damage the seal if the pistol stays under pressure. Also it will prevent someone from picking up the pistol and accidentally firing it.
Barney and Ben
22 Long Rifle
I would use a 22 long caliber rifle, a Kember,Browning for the pistol I would use a 9mm or 22 long rifle pistol a Kimber, or Sig Sauer.
The only thing that could look remotley close to it would be a WE Luger with a long barrel
try egunparts
50-160