The Sig Sauer 1911 X is a full-size 1911-style pistol chambered in .45 ACP. It has a 5-inch barrel and a single-action-only trigger, shipping with two 8-round magazines for 8+1 capacity. The stainless steel frame and slide give it a silver finish, and the slide is cut for optics mounting. 
 

Key Specifications 

• Brand: Sig Sauer 
• Model: 1911 X 
• Caliber: .45 ACP 
• Action: Semi Auto 
• Capacity: 8+1 
• Barrel Length: 5 in 
• Finish: Stainless 
   

Detailed Features 

• Stainless steel frame and slide 
• Optics-ready slide cut 
• X-Ray3 day/night sights 
• G10 grip panels 
• Single-action-only trigger 
• Includes two 8-round magazines

Owners of the 1911 X consistently note the quality of the stainless construction and the easy-to-acquire X-Ray3 sights in low light. The pistol runs .45 ACP reliably across most commercial loads. Some find the G10 grips aggressive during extended range sessions.

The single-action-only trigger is a draw for experienced 1911 shooters who want a crisp break without a long reset. The full-size frame fits large hands well but limits concealed carry options. Shooters transitioning from striker-fired pistols need time to adjust to the manual of arms.

The 1911 X sits at a premium price point, and opinions split on whether the Sig name and optics-ready cut justify the cost over comparable stainless 1911 options. The X-Ray3 sights perform well enough that most owners skip mounting a red dot, which makes the optics cut feel like future-proofing rather than a current need.