The device that holds the cartridges for a semi-automatic pistol is called a magazine. It stores ammunition and feeds it into the chamber as the pistol cycles during firing. Magazines can be removable or integral to the firearm, and they come in various capacities depending on the design of the pistol.
Keltec PF9, a 9mm semiauto pistol.
Contact the maker
A stovepipe. a jamb The right answer is its called SMOKESTACKING
About $60- $100 If you have missing or broken parts call Numrich.
About $200, depending on exact model.
revolver
To answer the question we'll need to know more about this pistol. Is it a revolver or a semiauto? What model and caliber? I found a Colt frontier scout .22 with that serial number made in 1962.
Yes, the .44 caliber cartridges are pistol/revolver cartridges. Lever action carbines/rifles of the 1800's utilized many pistol calibers so that frontiersmen could use the same ammo for both guns.
May be called a "stovepipe", since the empty case is frequently caught pointing up, like a miniature stove pipe.
The safety on a pistol is a device to prevent it from firing accidentally.
Extractor/ejector
They sell C02 Cartridges for any pistol but I don't believe they sell the Umarex brand. However all c02 cartridges are universal and interchangeable