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This Volquartsen mainspring is built to drop right into your Mark II or Mark III and give you dependable function when your stock spring wears out. The assembly comes fully finished and ready to install, no gunsmithing required.
Volquartsen machines every component of this mainspring with wire EDM-cut and CNC precision. That means superior fit and function compared to factory replacements. The engineering is clean, the tolerances are tight, and everything works together like it should.
This mainspring assembly doesn't carry the lock feature you'll find on the Ruger factory Mark III housing. For owners who prefer the simpler, Mark II-style operation, that's actually a feature. If you're swapping this in, know that it simplifies reassembly and removes the magazine disconnect requirement that comes with factory Mark III springs. This is the go-to choice for anyone who's dealt with finicky factory springs and wants a proven upgrade.
This is built specifically for Mark II and Mark III frames only. Do not use this on any 22/45 model. If you have a 22/45 pistol, Volquartsen makes a different spring with different geometry to match that grip angle. Make sure you're grabbing the right part for your frame.
Yes, this assembly is designed specifically for both Mark II and Mark III pistols. However, it does not fit any 22/45 frame models. If you own a 22/45, Volquartsen makes a different mainspring (part VC3MSR-45-B) with a different grip angle geometry that will work for that platform.
The Volquartsen mainspring is CNC-machined and wire EDM-cut for superior precision and fit. Unlike the factory Mark III spring, this version doesn't include the lock feature, which simplifies operation and reassembly. Many owners prefer this simpler design, and it performs reliably across both Mark II and Mark III models.
Installation is a DIY task for most owners, though the Mark III mainspring assembly is known for being fussy to reinstall properly. Take your time with the process, pull the trigger to drop the hammer before reinsertion, and make sure the hammer strut seats correctly in the housing pocket. Some owners find assembly aids helpful.
Factory mainsprings can wear out, causing failures to fire or inconsistent function. Volquartsen parts are known for quality and durability. Many owners also upgrade to eliminate the Mark III magazine disconnect requirement and simplify their gun's operation.
| UPC | 810162013400 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | VC3MSR-3-B |
| Model |
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