Pistols are short to medium range weapons with low to moderate damage and a small amount of recoil. Reload speeds tend to be quick while fire rate is either quick (for Pistols) or slow (for Revolvers and Hand Cannons), with weapons using anywhere from Light to Heavy Bullets.
The Pistol appears to resemble an M1911; however, the M1911 could only carry 7 bullets in one cartridge, whereas the Pistol carries 16.
The Suppressed Pistol shares a striking resemblance to the FN FNP 45 with a holographic sight (like the Heavy Shotgun) and a suppressor.
Likewise, the Hand Cannon is distinctly based off of the Desert Eagle (or Deagle), a handgun that is infamous for its incredible power (hence the name). Because of this, many players will call the Hand Cannon by its real-life name.
The Suppressed Pistol and Hand Cannon can be considered spiritual successors to the Pistol and Revolver, respectively.