The Standard Manufacturing 1911 HPX takes the Government-model frame and adds a set of performance-oriented upgrades that make it more competitive on the range. It chambers .45 ACP, holds 7+1 rounds, and runs a 5-inch stainless match-grade barrel. 
 

Key Specifications 

• Manufacturer: Standard Manufacturing 
• Model: 1911 HPX 
• Caliber: .45 ACP 
• Capacity: 7 + 1 rounds 
• Barrel Length: 5 inches 
• Sights: Novak White Dot 
• Frame Material: 4140 Carbon Steel (CNC Machined from Forgings) 
• Slide Material: 4140 Carbon Steel (CNC Machined from Forgings) 
• Barrel Material: Stainless Steel Match Grade with Match Bushing 
• Special Features: 
  • Lowered and Flared Ejection Port for reliable extraction 
  • Rear Slide Serrations for improved grip during slide manipulation 
  • High Profile Low-Mount Tactical Sights for enhanced aiming precision 
  • Enhanced Slide to Frame Fit ensuring smoother operation 
• Finish Color Options: Black / Blue 
   

Features 

Both the frame and slide are CNC-machined from 4140 carbon steel forgings, a stronger starting point than castings and consistent with higher-end production 1911s. The stainless match-grade barrel with match bushing tightens the barrel-to-bushing interface, which translates directly to tighter groups. 
 
The lowered and flared ejection port reduces the chance of case-rim shaving and makes extraction more consistent during rapid fire. Rear slide serrations give a positive grip for press-checks and malfunction clearances. Novak White Dot sights are a well-regarded upgrade over plain GI sights and work in low light. 
 
The slide-to-frame fit is tightened beyond standard production tolerances, which helps the gun shoot well from the first round but does mean a break-in period is normal. Overall this is a 1911 that will satisfy anyone who wants a carry-capable gun with genuine accuracy enhancements rather than cosmetic upgrades.

Owners of the 1911 HPX generally like it for the reasons you'd expect: the 1911 platform's track record, the .45 ACP caliber's stopping power, and the match-grade barrel's accuracy. Tight groups are a common report, and the tactical sights and grip are well-received.

The Black/Blue finish gets positive mentions for looking modern without abandoning the classic 1911 silhouette.

The main criticisms are size and weight for carry use. A steel-frame 5-inch 1911 is not a compact carry gun, and people who expected otherwise say so. Price also comes up: some think comparable performance is available cheaper, though most who bought at the price point feel the build quality justifies it. A handful of owners mention that certain ammunition types need a break-in period before running flawlessly.

Customization is a common topic. 1911s have a wide aftermarket and HPX owners are quick to swap grips or fit different accessories.