Single shot, revolver, automatic, semi-automatic
Rifles, shotguns, handguns
Handguns can range from about $200 and up. Some guns are a couple of thousand dollars or more.
Some unique handguns include the Arsenal Firearms Strike One, with a rotating barrel locking system for improved accuracy; the Chiappa Rhino, known for its bottom-aligned barrel to reduce recoil; and the Arsenal Double Barrel Pistol, featuring two side-by-side barrels for increased firepower.
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It's in different places on different handguns. On some guns, it's on the barrel. On some revolvers, it's under the crane. On some it's under the grips. Also, some guns don't have a model number printed on them.
The brands that are well made are not. There are some cheap crappy handguns that are prone to breakage, but that's been the case ever since cheap crappy handguns have been made, even before polymer was used.
Yes, handguns have a serial number.
Old gun catalogs
Not sure but Taurus makes some reliable handguns.
Yes, handguns were used in WWI, and WWII.
In most U.S. States, handguns don't require registration.
Most historians believe handguns were first invented in the mid 1400s.