Ruger GP100 Seven-Shot
Sturm, Ruger & Company · Revolver · In Production · 2017
Also known as: Ruger GP100 7-Shot, GP100 Seven-Shot .357 Magnum
Overview
The Ruger GP100 Seven-Shot is a stainless-steel, double-action/single-action revolver chambered in .357 Magnum that increases the classic GP100's cylinder capacity from six to seven rounds. Built on Ruger's rugged investment-cast frame with a triple-locking cylinder and transfer-bar safety, it is offered with 2.5-inch, 4.2-inch, and 6-inch barrels, cushioned rubber grips with hardwood inserts, a fiber-optic front sight, and an adjustable rear sight.
Specifications
| Weight (empty) | 1134 g (40.0 oz) |
| Overall Length | 241 mm (9.49") |
| Barrel Length | 107 mm (4.21") |
| Height | 140 mm (5.51") |
| Width | 39 mm (1.54") |
| Firing Mechanism | Double Action Single Action |
| Trigger Type | Double Action Single Action |
| Trigger Pull | 46 N (10.3 lbf) |
| Magazine Capacity | 7 rounds |
| Magazine Type | Rotary |
| Muzzle Velocity | 400 m/s (1312 fps) |
| Muzzle Energy | 700 J (516 ft·lbf) |
| Effective Range | 50 m (55 yd) |
| Barrel Rifling | Right Hand |
| Rifling Twist | 476 mm (18.74") |
| Number of Grooves | 6 |
| Frame Material | Stainless Steel |
| Barrel Material | Steel |
| Stock Material | Rubber |
| Finish | Stainless |
Calibers
- .357 Magnum · primary — also known as .357 Mag, .357 S&W Magnum, 9x33mmR
Features
- Firing modes: Semi Automatic
- Feed systems: Revolver Cylinder
- Safety mechanisms: Transfer Bar, Triple Locking Cylinder
- Features: Fiber Optic Front Sight, Adjustable Rear Sight, Cushioned Rubber Grip, Hardwood Grip Insert, Fluted Cylinder, Recessed Muzzle Crown
Base model
Service history
Operators
- Civilian sport and defensive shooters · adopted 2017
Production
Production years: 2017-present
Part of the long-running GP100 line first introduced in 1985; seven-shot models added in 2017
Origin
Country of origin: United States
Designer: Sturm, Ruger & Company
Notes
The seventh chamber is fitted into the same-diameter GP100 cylinder without enlarging the frame, giving the shooter an extra round over traditional six-shot .357 Magnum revolvers. It also safely fires .38 Special and .38 Special +P ammunition.
Background
The GP100 was introduced in 1985 as a beefed-up successor to Ruger's Security-Six, engineered to withstand a steady diet of full-power .357 Magnum loads. The seven-shot version answered a market that valued the extra round while keeping the GP100's reputation for durability.