The Wilson Combat Hammer Spring #19 (Wilson Combat part no. 27) is a 19-lb reduced-power spring built for full-size Government, Commander, and Professional frame 1911 pistols chambered in 9mm, .38 Super, or .45 ACP. Wilson Combat recommends this lighter-than-factory spring specifically for shooters running light target loads, where a full-power mainspring can make the trigger feel heavier and slower to reset than it needs to be. The spring is machined from silver steel to Wilson Combat’s own tolerances, matching the quality shooters expect from their trigger work. Installation puts the mainspring under real tension, so eye protection and care during disassembly are essential.

Key Specifications

• Rated at 19 lbs, a reduced-power spring compared to a factory-weight mainspring.
• Built for Government, Commander, and Professional frame 1911s.
• Suited for 9mm, .38 Super, or .45 ACP chamberings.
• Recommended specifically for light target loads.
• Machined from steel with a silver finish.
• Requires care during installation, as the mainspring is under tension; eye protection is recommended.

Frequently Asked Questions

What 1911 frames does this fit? It’s built for full-size Government, Commander, and Professional frame 1911s.

Is this a full-power or reduced-power spring? It’s a reduced-power spring rated at 19 lbs, recommended for light target loads.

Buy the Wilson Combat 19 lb Reduced Power Hammer Spring

A full-power mainspring can make a light target load feel stiffer than it needs to, and this Wilson Combat 19-lb spring is built specifically to smooth that out. Order it from our Wilson Combat lineup, part of our full selection of 1911 parts, from our Lubbock, Texas gun shop.