Uberti 1866 & 1873 Magazine Sleeve Kit for .357 Magnum & .38 Special
Improve cartridge alignment and feeding consistency in compatible Uberti 1866 and 1873 lever-action rifles with the SliXprings Magazine Sleeve Kit. Precision-machined to support proper cartridge positioning, this upgrade helps rounds move more smoothly from the magazine tube toward the carrier for dependable cycling.
During rapid lever operation, cartridges can shift as they travel through the magazine tube. The SliXprings Magazine Sleeve helps keep compatible cartridges centered and better aligned, reducing unnecessary movement and helping promote a smoother transition into the carrier.
Designed for Uberti rifles and carbines chambered in .357 Magnum or .38 Special, the kit is also available for original Winchester Model 1873 rifles chambered in .32-20. It is a practical reliability upgrade for Cowboy Action competitors, high-volume shooters, and owners maintaining well-used lever-action rifles.
Why Upgrade to the SliXprings Magazine Sleeve Kit?
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✔ Helps keep cartridges centered inside the magazine tube
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✔ Supports smoother cartridge movement toward the carrier
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✔ Promotes more consistent feeding and cycling
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✔ Helps reduce interruptions caused by cartridge misalignment
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✔ Designed for rapid Cowboy Action lever operation
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✔ Precision-machined for an accurate fit
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✔ Corrosion-resistant construction for long service life
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✔ Proudly Made in the USA
Features & Benefits
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Helps improve cartridge alignment inside the magazine tube
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Supports smoother movement from the magazine tube toward the carrier
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Promotes consistent feeding during rapid lever operation
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Helps reduce cartridge shifting and unnecessary movement
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Designed for compatible Uberti 1866 and 1873 rifles and carbines
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Available for .357 Magnum and .38 Special Uberti models
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Also fits original Winchester Model 1873 rifles chambered in .32-20
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Precision CNC-machined for an accurate, consistent fit
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Corrosion-resistant construction for dependable long-term use
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Ideal for Cowboy Action Shooting, competition, and recreational shooting
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Proudly Made in the USA
Compatibility
Fits
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Uberti 1866 rifles and carbines chambered in .357 Magnum
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Uberti 1866 rifles and carbines chambered in .38 Special
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Uberti 1873 rifles and carbines chambered in .357 Magnum
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Uberti 1873 rifles and carbines chambered in .38 Special
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Original Winchester Model 1873 rifles chambered in .32-20
Does Not Fit
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.44-40 Winchester models
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.45 Colt models
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.44 Magnum models
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Uberti 1860 Henry rifles
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Miroku-manufactured Winchester rifles
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Any caliber or firearm not specifically listed
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Modified or incompatible magazine tube assemblies
Important:
The SliXprings Magazine Sleeve Kit is engineered specifically for Uberti 1866 and 1873 rifles chambered in .357 Magnum or .38 Special and original Winchester Model 1873 rifles chambered in .32-20. Verify the rifle manufacturer, model, caliber, magazine tube configuration, and barrel length before ordering.
Why Cartridge Alignment Matters
Reliable feeding begins before a cartridge reaches the carrier. As rounds move through the magazine tube, excess clearance can allow them to shift or approach the carrier at an inconsistent angle.
The SliXprings Magazine Sleeve helps support and center compatible cartridges as they move forward, promoting a more consistent transition from the magazine tube into the rifle's feeding system.
Designed for Competition Reliability
Cowboy Action Shooting places unique demands on a lever-action rifle. Rapid cycling can magnify small alignment problems that may not appear during slower recreational use.
By supporting proper cartridge positioning in the magazine tube, the SliXprings Magazine Sleeve Kit helps promote smooth, repeatable feeding during fast lever operation and high-volume shooting.
Installation & Sizing Notes
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Confirm the rifle is completely unloaded before beginning installation.
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Verify the rifle manufacturer, model, and caliber.
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Measure the barrel and magazine tube as directed before selecting the sleeve configuration.
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Inspect the magazine tube, spring, follower, and cap for wear or previous modification.
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Confirm smooth cartridge movement and proper rifle operation after installation.
Modified magazine tubes or nonstandard internal components may affect compatibility. Professional installation by a qualified gunsmith or experienced lever-action rifle tuner is recommended when fit or function is uncertain.
Ideal For
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Cowboy Action Shooting
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Competition lever-action rifles
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High-volume recreational shooting
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Improving cartridge alignment
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Promoting smoother feeding and cycling
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Routine rifle reliability upgrades
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Restoring consistent feeding in well-used rifles
Whether you're preparing a competition rifle, correcting cartridge-alignment issues, or improving the dependability of a favorite lever-action firearm, the SliXprings Magazine Sleeve Kit provides a precision-machined upgrade designed to promote smoother feeding, consistent cycling, and dependable operation.
Proudly Made in the USA
Every SliXprings Magazine Sleeve Kit is precision-machined in the United States for accurate fit, corrosion resistance, and dependable long-term performance in compatible lever-action rifles.
