SliXpring-Main Performance Mainspring System for Uberti 1873 Rifles
Transform the performance of your Uberti 1873 rifle or carbine with the SliXpring-Main Performance Mainspring System. Engineered specifically for competition-tuned rifles, this innovative system replaces the traditional flat leaf spring with a modern mainspring design that delivers faster lock time, smoother operation, more consistent primer ignition, and exceptional long-term durability.
Unlike conventional reduced-power leaf springs, the SliXpring-Main is a complete redesign of the 1873 mainspring system. It delivers faster hammer acceleration while maintaining dependable primer strike energy, resulting in quicker shot response and more consistent ignition without the continual adjustment often associated with traditional leaf springs.
Developed for serious Cowboy Action shooters, the SliXpring-Main provides a significant competitive advantage while preserving the legendary reliability of the Uberti Model 1873.
Why Upgrade to the SliXpring-Main?
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✔ Approximately 30% faster lock time
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✔ Faster hammer acceleration with dependable primer ignition
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✔ Smoother lever operation
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✔ Eliminates traditional leaf spring fatigue
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✔ Virtually eliminates routine spring adjustment
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✔ Modern engineered spring system—not simply a lighter leaf spring
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✔ Fully reversible installation
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✔ Proudly Made in the USA
Performance Benefits
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Approximately 30% faster lock time than most tuned leaf spring systems
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More consistent and reliable primer ignition
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Reduces misfires caused by inconsistent hammer energy
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Smoother hammer movement throughout the firing cycle
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Modern mainspring system eliminates traditional leaf spring fatigue
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No routine spring adjustment required
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Designed specifically for competition-tuned Uberti 1873 rifles
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Ideal for Cowboy Action Shooting and high-volume competition
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Proudly Made in the USA
Included Components
Every SliXpring-Main kit includes two interchangeable hammer axles, allowing the installer to tune the rifle for the preferred balance of speed, ignition energy, and operating feel.
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Standard Axle – Delivers maximum lock time reduction with the strongest, most consistent primer ignition.
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Reduced-Diameter Axle – Produces a lighter, smoother lever stroke while still providing significantly faster lock time than conventional leaf spring systems.
Compatibility
✔ Fits
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Uberti 1873 rifles
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Uberti 1873 carbines
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Competition-tuned rifles
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Short-stroked rifles
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✘ Does Not Fit
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Earlier square-bridge lower tangs
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Some Border Rifle tang configurations without modification
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Uberti 1866 rifles
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Original Winchester rifles
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Firearms not specifically listed
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Important:
The SliXpring-Main is engineered specifically for Uberti Model 1873 rifles and carbines. Minor fitting may be required depending on manufacturing tolerances and previous action work. Installation is completely reversible, allowing the rifle to be returned to its original factory mainspring configuration.
How the SliXpring-Main Improves Performance
Traditional leaf springs gradually lose tension through repeated flexing and often require adjustment to maintain optimum performance. Their design also limits how efficiently energy is transferred to the hammer.
The SliXpring-Main replaces the factory leaf spring with an engineered spring system that delivers faster hammer acceleration, smoother operation, and more consistent primer strikes while virtually eliminating the fatigue associated with conventional flat springs.
Installation Notes
The SliXpring-Main is intended for experienced installers and qualified gunsmiths familiar with Uberti 1873 action tuning.
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Minor fitting may be required depending on firearm tolerances.
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Typical installation time is approximately one hour.
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Installation is completely reversible.
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Professional installation is recommended for optimum performance.
Ideal For
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Cowboy Action Shooting
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Competition-tuned Uberti 1873 rifles
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Short-stroke action packages
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Shooters seeking faster lock time
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Replacing traditional leaf spring systems
Whether you're building a championship-level Cowboy Action rifle or upgrading an existing competition gun, the SliXpring-Main Performance Mainspring System represents one of the most significant performance improvements available for the Uberti 1873. It delivers faster lock time, smoother cycling, dependable ignition, and long-term durability that conventional leaf springs simply cannot match.
Proudly Made in the USA
Every SliXpring-Main system is precision manufactured in the United States to provide competition-grade performance, exceptional reliability, and years of dependable service.
Installation Instructions
