The Colt Viper .357 Magnum 4.25-inch revolver (brand part no. VIPER-SP4WRR) is a six-shot, double-action/single-action revolver with a polished forged stainless steel frame. The longer barrel gives more sight radius and a steadier hold than the 3-inch Viper, and the half-lug profile keeps the front end from feeling heavy. Fixed sights, walnut grips and a 1-in-14-inch twist make it a straightforward choice for the range, home defense or carry in a belt holster from Colt.

Key Specifications

• The chambering is .357 Magnum, and the cylinder also accepts .38 Special cartridges for lighter practice loads.
• Cylinder capacity is 6 rounds, a full six-shot load before a reload.
• Barrel length is 4.25 inches, long enough for a steadier sight picture and more velocity from magnum loads.
• The barrel is a half-lug design, which keeps weight balanced toward the grip.
• The action is double-action/single-action, so you can fire with a long pull or cock the hammer for a lighter, crisper shot.
• The frame is polished forged stainless steel, a durable finish for carry and range use.
• Sights are a black ramp front with a U-notch rear, fixed so there is nothing to snag or knock out of alignment.
• Grips are American walnut, which gives a secure, traditional hold.
• The rifling twist is 1-in-14 inches, the rate Colt cuts into this barrel.
• Overall length is 9.25 inches and weight is 28.5 ounces, a manageable size for a full-power revolver.

Frequently Asked Questions

What is the barrel length on this Viper? This model has a 4.25-inch half-lug barrel. Colt also builds the Viper with a 3-inch barrel.

Can it shoot .38 Special? Yes. It is chambered for .357 Magnum and also accepts .38 Special cartridges.

How many rounds does it hold? The cylinder holds 6 rounds, and the action is double-action/single-action.

Buy the Colt Viper .357 Magnum Revolver, 4.25-Inch, Stainless, 6-Shot

If a 3-inch revolver feels too snappy and a 6-inch too long to carry, the 4.25-inch Viper sits in the useful middle. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL, and see our other revolvers too.