Most of these are swing barrel pistols- the barrel swings to one side.
BEING CAREFUL TO POINT THE MUZZLE IN A SAFE DIRECTION- draw the hammer back to the half-cock notch. Grasp the top of the barrel (keeping fingers OFF the muzzle) and swing the muzzle to the left. The rear (breech) should swing to the right. The extractor should pull the cartridge out of the chamber partially- pull it out with your fingers.
IF YOU HAVE LITTLE EXPERIENCE WITH GUNS, DO NOT TRY THIS. Most gunsmiths will unload a firearm for little or nothing. Call one (they are in the phone book) wrap the pistol in newspaper, put it in a box, and take it to them.
The Butler 22 caliber single shot pistol was made by Derringer. The Derringer company was founded by Henry Derringer. Derringer pistols are the smallest handguns available and were most commonly used by women.
10-100 USD or so
A pistol is a single hand firearm with a short barrel.
Impossible to answer without the maker's name. Even then....
Unload the dishwasher
I have the same firearm I belive, I have fired Remington .22 short rounds. Mine has a slight problem with having to strike twice to set the round off He Actually Hates It! I also have one and it also has to strike twice to fire. Or it did. A gunsmith "improved" it to where it now requires 4 strikes to fire. You can get some parts as it is a copy of a Colt. Google "butler derringer parts".
I have seen them recently at auction in the $175 dollar range.
It is called a pistol
A short recoil, semi-automatic, single-action / double-action pistol, the M9 uses a 15-round staggered magazine with a reversible magazine release button that can be positioned for either right or left-handed shooters.
You need a gunsmith