Ruger GP-100

Ruger GP-100 revolver, stainless steel model, caliber .357 Magnum, with full-lug 4 inch barrel

Ruger GP-100 revolver, stainless steel model, caliber .38 Special, with half-lug 4 inch barrel and fixed sights

Ruger GP-100 revolver, carbon steel model, caliber .357 Magnum, with half-lug 6 inch barrel

Type: Double Action revolver
Caliber: .357 Magnum, .38 Special
Barrel length: 3" / 76 mm, 4" / 102 mm or 6" / 152 mm
Capacity: 6 rounds
Weight: ~ 41 oz /  1150 g  with 4" barrel

The Ruger GP-100 revolver was first introduced in 1985 as a 2nd-generation of the Ruger Double Action revolvers, with intent to replace successful Ruger Security / Service / Speed Six line of revolvers. The GP-100 was a serious improvement over previous Ruger guns. It was made even stronger, with intent to fire an unlimited number of full-power .357 Magnum rounds, and was produced in many variations, with three basic barrel lengths (3" / 76 mm, 4" / 102 mm or 6" / 152 mm), various barrel profiles, with fixed or adjustable sights etc. GP-100 revolvers also are offered in two finish/material variations - blued carbon steel or polished stainless steel. Like most other Ruger guns, GP-100 revolvers are exceptionally strong, reliable and durable, and are great self-defense, security or practice weapons.

The Ruger GP-100 revolvers are double-action guns with exposed hammers and swing-out cylinders. The trigger lockwork was assembled into the single unit along with detachable trigger guard, hammer was powered by durable coil spring. Revolvers have separate frame-mounted firing pin and automatic transfer-bar safety which permits the hammer to strike the firing pin only if trigger is fully depressed. Cylinder lock is operated by a push-button, located on the left side of the frame, behind the cylinder. Unlike its predecessors, GP-100 revolvers feature additional cylinder lock, located at the front of cylinder crane, which is disengaged automatically once shooter has pressed the cylinder release button. Cylinder holds 6 rounds of ammunition, and opens  to the left. Grip frame is of compact design, and standard grips are of single-piece wrap around type, made from synthetic rubber with wooden inserts. Revolvers are offered either with fixed sights or with adjustable sights.