SIG SAUER 1911 STX – .45 ACP, Full-Size, 5″ Barrel, Stainless Steel Frame, Night Sights, 8-Round
The SIG SAUER 1911 STX is a premium single-action-only (SAO), semi-automatic pistol that combines the classic 1911 platform with SIG SAUER’s modern refinements. Chambered in .45 ACP, the STX is built for shooters who appreciate traditional 1911 ergonomics, a crisp single-action trigger, premium materials, and enhanced accuracy features.
The full-size STX features a 5-inch barrel, stainless steel frame, and stainless slide with a distinctive two-tone appearance. Designed with competition and defensive shooting in mind, it includes a match-grade barrel, adjustable combat night sights, an extended ambidextrous thumb safety, and a beavertail grip safety for improved control and handling.
The pistol’s refined details include checkered wood grips, front strap checkering, a skeletonized hammer, and a flat-top slide design. With an 8-round magazine capacity, the SIG SAUER 1911 STX delivers the classic feel of a full-size 1911 with SIG SAUER craftsmanship and modern performance enhancements.
Specifications
| Feature | Specification |
|---|---|
| Manufacturer | SIG SAUER |
| Model | 1911 STX |
| Caliber | .45 ACP |
| Action | Semi-Automatic |
| Trigger System | Single-Action Only (SAO) |
| Barrel Length | 5 inches |
| Barrel Type | Match Grade Barrel |
| Slide Material | Stainless Steel |
| Slide Finish | Nitron / Two-Tone Finish |
| Frame Material | Stainless Steel |
| Capacity | 8+1 Rounds |
| Magazine | 8-Round Magazine |
| Sights | Adjustable Combat Night Sights |
| Safety | Ambidextrous Thumb Safety, Beavertail Grip Safety |
| Trigger | Match-Style Single-Action Trigger |
| Grip | Checkered Wood / Maple Grips (configuration dependent) |
| Hammer | Skeletonized Hammer |
| Front Strap | Checkered |
| Overall Length | Approx. 8.7 inches |
| Overall Height | Approx. 5.5 inches |
| Overall Width | Approx. 1.4 inches |
| Weight | Approx. 41.6 oz |
Key Features
- Chambered in .45 ACP
- Classic full-size 1911 design
- 5-inch match-grade barrel
- Stainless steel frame and slide
- Premium two-tone appearance
- Adjustable combat night sights
- Crisp SAO trigger system
- Ambidextrous thumb safety
- Beavertail grip safety
- Skeletonized hammer
- Checkered wood grips
- Front strap checkering
- 8-round magazine capacity
The SIG SAUER 1911 STX .45 ACP represents a refined take on the traditional 1911, offering a balance of classic design, premium materials, and modern upgrades. Its match-grade features and elegant styling make it a popular choice among 1911 enthusiasts, collectors, and precision-oriented shooters.



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