Want this question answered?
Keltec PF9, a 9mm semiauto pistol.
Contact the maker
About $60- $100 If you have missing or broken parts call Numrich.
A stovepipe. a jamb The right answer is its called SMOKESTACKING
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