Make: Colt

Model: Viper

Serial Number: 88570M

Year of Manufacture: 1977

Caliber: .38 Special

Action Type: Double Action / Single Action Revolver with Swing-Out Cylinder

Barrel Length: 4”

Sights / Optics: The front sight is a serrated ramp blade integral to the barrel. The rear sight is a square-notch milled into the top strap.

Grip Configuration & Condition: The grips are checkered walnut with silver Colt medallions. The grips have no notable wear or damage, only light handling marks. The checkering is sharp. There are no chips or cracks. Overall, the grips are in Excellent condition.

Type of Finish: Nickel

Finish Originality: Original

Bore Condition: The bore is bright, and the rifling is sharp. There is no visible erosion or fouling. In this writer’s opinion, the bore rates 10/10.

Overall Condition: This revolver retains 99%+ of its original metal finish. There is no notable wear or damage, only light handling marks. The screw heads are sharp, and the markings are clear. Overall, this revolver rates in Excellent condition.

Mechanics: The action functions perfectly. The lock-up is tight, the cylinder rotation is smooth, and the trigger pull is crisp in both single and double action. We did not fire this revolver. As with all used firearms, a thorough cleaning may be necessary to meet your maintenance requirements.

Box, Paperwork & Accessories: This revolver includes its original Colt factory box with serial-matching label.

Our Assessment: The Colt Viper is one of the rarest revolvers in Colt’s lineup. Introduced in 1977 as a lightweight, 4-inch-barreled variant of the Colt Police Positive, the Viper was only produced for one year, making it one of the most elusive Colt production revolvers ever made.

This particular example is even more desirable due to its nickel finish, making it even more rare than the standard blued models. The Viper’s lightweight alloy frame and 4-inch barrel made it a great choice for law enforcement and personal defense, but its extremely short production run resulted in very few being made.

With only one year of production, a stunning nickel finish, and its original box, this 1977 Colt Viper is an exceptional collector’s piece. Finding one in 99% condition with its original factory box is an incredibly rare opportunity. Whether you're a Colt collector, a revolver enthusiast, or an investor looking for one of the most elusive production Colts, this Viper is a must-have.