Pistol
A pistol was a type of handgun that used a chemical reaction to propel a lead bullet.  The term was also applied to small hand-held directed energy weapons with a pistol grip and used as a sidearm.

A pistol was just one artifact found in San Francisco in 2368. According to Data it was a "forty-five caliber single action cavalry pistol invented by Colt Firearms in 1873". ()

The Nazis of Ekos were armed with, among other things, pistols reminiscent of the Luger model known from Earth of the 1930s and 1940s. ()

A revolver was another type of pistol. ()

Types 
.45 automatic
Bajoran phaser
Colt .45
Disruptor pistol
Dueling pistol
EM pistol
Glock 17
Laser pistol
Mazarite sidearm
Phase-pistol
Pulse-pistol
Suliban pistol
Tandaran pistol
Varon-T disruptor
Vulcan particle weapon
Xindi-Reptilian ray gun

External link 
 

de:Pistole
fr:Pistolet
Hand-held weapons
Projectile weapons