Gauge & Caliber History

Shotgun

Rifle

Pistol

Revolver

Below are all of the Pistol calibers ever produced by Ruger.

Firearm Calibers
Rimfire Pistols .22 LR
Centerfire Pistols .256 Win. Mag., 9mm Luger*, 9x21mm, .40 S&W, .45 Auto
(* some shipped with extra .30 Cal (7.65mm Luger) barrel)