Uberti 342340 1866 Yellowboy .45 Colt 20" Octagon Barrel Lever-Action Rifle

Uberti 342340 1866 Yellowboy .45 Colt 20" Octagon Barrel Lever-Action Rifle

The Uberti 1866 Yellowboy 342340 is a traditional .45 Colt lever-action rifle built around one of the most recognizable repeating rifle designs of the American West. This configuration combines a 20-inch octagonal barrel, brass receiver, tubular magazine, and walnut furniture in a compact Short Rifle format that preserves the appearance and operating characteristics of the original Model 1866.

The brass receiver is the defining feature of the 1866 and the reason the rifle became known as the "Yellowboy." Uberti pairs that receiver with blued steel components and traditional wood furniture, creating a period-style lever gun suited to Cowboy Action shooting, recreational use, and collections focused on historically inspired firearms.

.45 Colt Chambering

Chambered in .45 Colt, this Yellowboy combines a classic Western-style cartridge with the traditional 1866 lever-action platform. The caliber is widely used in Cowboy Action shooting and is also a natural choice for shooters who prefer a rifle and revolver chambered for the same cartridge.

The tubular magazine provides a 10-round listed capacity, giving the rifle the balance and loading characteristics associated with a traditional full-length lever-action magazine system.

20-Inch Octagonal Barrel

The 20-inch octagonal barrel gives the rifle the visual character of a traditional 19th-century sporting arm while keeping overall length manageable. Compared with longer rifle configurations, the Short Rifle format offers quicker handling without giving up the classic profile of the 1866 platform.

The octagonal barrel also distinguishes this model from round-barrel carbine configurations and contributes to the rifle's traditional appearance.

Traditional Toggle-Link Lever Action

The Model 1866 uses a toggle-link operating system. Cycling the lever extracts and ejects the fired case, lifts the next cartridge from the tubular magazine, chambers the round, and cocks the external hammer.

Cartridges are loaded through the side loading gate in the receiver, allowing the magazine to be replenished without removing the magazine tube. This operating layout is one of the defining features of the 1866 and remains a major part of its appeal for shooters who want a traditional Western lever-action experience.

Brass Receiver and Walnut Furniture

The polished brass receiver gives the Yellowboy its unmistakable appearance and separates it visually from later steel-receiver lever-action designs such as the Model 1873. The receiver is paired with walnut stock and forearm components for a period-correct look and feel.

The overall configuration avoids modern rails, synthetic furniture, and other contemporary additions, keeping the rifle focused on the traditional design that made the 1866 famous.

Key Features

• .45 Colt chambering
• Model 1866 Yellowboy Short Rifle configuration
• 20-inch octagonal barrel
• Traditional toggle-link lever action
• Brass receiver
• External hammer
• Side loading gate
• Tubular magazine
• 10-round listed capacity
• Walnut stock and forearm
• Traditional open sights
• Classic Western-style lever-action design
• Made in Italy by Uberti

Specifications

• Manufacturer: Uberti
• Model: 1866 Yellowboy Short Rifle
• MPN: 342340
• UPC: 037084423401
• Caliber: .45 Colt
• Action: Lever Action
• Barrel Length: 20"
• Barrel Profile: Octagonal
• Receiver: Brass
• Magazine: Tubular
• Capacity: 10 Rounds
• Stock: Walnut
• Sights: Traditional Open Sights
• Country of Manufacture: Italy

Who Is the Uberti 1866 Yellowboy For?

The Uberti 342340 is well suited to shooters who want a traditional lever-action rifle with strong Old West styling and straightforward operation. Its .45 Colt chambering, 20-inch octagonal barrel, brass receiver, and walnut furniture make it particularly relevant for Cowboy Action shooting, recreational lever-gun use, and historical firearm collections.

For buyers comparing Uberti lever-action rifles, the 1866 Yellowboy stands apart through its brass receiver and earlier design lineage. The 342340 keeps that identity intact in a practical 20-inch Short Rifle configuration without adding modern features that would detract from the original character of the platform.

WARNING This product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, visit www.P65Warnings.ca.gov. You must be 18 or older to shop or purchase on our website, and 21 or older to purchase ammunition or firearms. Check local laws before ordering. By ordering, you certify that you meet all federal, state, and local legal requirements. There are no returns or exchanges on armor, firearms, ammunition, or PPE. Ammunition ships UPS Ground to the lower 48 states.
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