The Cimarron 1866 Yellowboy Trapper is a lever-action rifle chambered in .44-40 Winchester with a 16-inch barrel. It has a walnut stock with a straight grip and a brass/blued finish typical of the 1866 Yellowboy pattern. The 10-round capacity and compact barrel length give it the short, handy Trapper configuration. 
 

Key Specifications 

• Brand: Cimarron 
• Model: 1866 Yellowboy Trapper 
• Caliber: .44-40 Winchester 
• Action: Lever Action 
• Capacity: 10 rounds 
• Barrel Length: 16" 
• Color/Finish: Brass/Blued, Walnut 
   

Detailed Features 

• 16-inch barrel in the compact Trapper configuration 
• Straight-grip walnut stock 
• Brass receiver with blued barrel (1866 Yellowboy pattern) 
• 10-round tubular magazine 
• .44-40 Winchester chambering

Owners of the Cimarron 1866 Yellowboy Trapper in .44-40 Winchester consistently mention the brass receiver as the rifle's most appealing visual attribute. The walnut straight-grip stock gets praise for its traditional feel and fit.

The 16-inch barrel makes the Trapper noticeably compact, which draws positive comments from those who appreciate the handling. Some owners note that the shorter barrel changes the balance compared to full-length 1866 variants, and opinions split on whether that is an improvement.

As a reproduction of a classic lever-action design, the 1866 Yellowboy Trapper attracts cowboy action shooters as well as collectors. The .44-40 Winchester chambering requires sourcing specific ammunition, which some owners flag as a mild inconvenience. Build quality from Cimarron's Italian manufacturing generally meets expectations, though fitting and finish consistency can vary between individual rifles.