The Smith & Wesson Model 1913 is a center fire

Centerfire ammunition

A centerfire cartridge is a cartridge with a primer located in the center of the cartridge case head. Unlike rimfire cartridges, the primer is a separate and replaceable component....

 semi-automatic pistol introduced by Smith & Wesson

Smith & Wesson

Smith & Wesson is the largest manufacturer of handguns in the United States. The corporate headquarters is in Springfield, Massachusetts. Founded in 1852, Smith & Wesson's pistols and revolvers have become standard issue to police and armed forces throughout the world...

 in 1913. This pistol was also known as the model 35 which was produced from 1913 to 1922. Approximately 8,350 were built and this gun was chambered in the .35 S&W Auto

.35 S&W Auto

The .35 Smith & Wesson is a centerfire pistol cartridge developed in 1912 for the newly designed Model 1913 self-loading pocket pistol intended to compete with the Colt Model 1903 Pocket Hammerless .32 ACP and Model 1908 .380 ACP pistols. The .35 caliber name implied a cartridge of diameter...

 cartridge. It featured smooth wooden grip panels, a fully grooved slide with crossbolt lock stud, and an ambidextrous safety

Safety (firearms)

In firearms, a safety or safety catch is a mechanism used to help prevent the accidental discharge of a firearm, helping to ensure safer handling....

 that was operated with the middle finger of the shooting hand.

History and engineering changes

• First Type—the original version as described above. The grip safety was operated by pressing it to the rear.

• Second Type—the grip safety was redesigned so that it had to be pushed to the left and rearward.

• Third Type—the grip safety was changed back to the original style of operation.

• Fourth Type—the magazine catch was redesigned.

• Fifth Type—used a heavier recoil spring and wider slide crossbolt lock.

• Sixth Type—the shape of the recoil spring channel was changed, and the sides of the slide were extended so they overlapped the sides of the frame.

• Seventh Type—the S&W stamp on the frame flat behind the grip was discontinued.

• Eighth Type—the caliber markings were moved from the left side of the barrel to the right, and the left was marked "Smith & Wesson
  Smith & Wesson
  Smith & Wesson is the largest manufacturer of handguns in the United States. The corporate headquarters is in Springfield, Massachusetts. Founded in 1852, Smith & Wesson's pistols and revolvers have become standard issue to police and armed forces throughout the world...
  
  ."

Specifications

Type: Blowback-operated autoloader

Caliber: .35 S&W

Magazine Capacity: Seven rounds

Barrel: 3.5 in.; hinged barrel/frame assembly

Overall Length: 6.5 in.

Weight, empty: 22 oz.

Sights: Round blade front; groove in barrel assembly rear

Grips: Smooth walnut with S&W medallions

Safety: Grip safety on front-strap; rotating manual safety on backstrap