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If you spend time behind your Mark IV at the range or competition, you've probably noticed the factory bolt release sits frustratingly low and requires real finger strength to operate. The Volquartsen extended bolt release fixes that problem with a simple, straightforward upgrade.
This release starts with 416 stainless steel and gets CNC machined into a flat, ergonomic shape with deep serrations that your thumb can actually grab. It extends just .050 inches beyond the factory part, which sounds minimal until you try it. That small bit of extra reach, combined with the wider surface area, transforms the bolt release from something you have to hunt for into something your thumb finds naturally. People who've added aftermarket grips to their Mark IV especially notice the difference, since bulkier grips can make the original release nearly impossible to reach without contorting your grip.
The part swaps in easily without any modifications to your pistol. It's designed specifically for the Ruger Mark IV (not the 22/45 variants), so make sure you have the standard Mark IV before ordering. The black finish matches the look of most Mark IV builds while maintaining that stainless steel durability underneath.
Volquartsen has been building precision rimfire parts for over forty years, and it shows in the execution of this release. Users consistently report that it gives them better control during rapid magazine changes and makes competitions less frustrating. The flat design creates a reliable point of contact between your thumb and the bolt, so you're not fighting the geometry of the gun anymore.
No, this release is designed specifically for the standard Mark IV and won't fit the 22/45 models. Make sure you have the standard Mark IV before ordering. Volquartsen makes a separate extended bolt release for the 22/45 variant if that's what you need.
Installation is extremely straightforward. You simply swap out the factory release for the Volquartsen part with no modifications to your pistol required. Many owners install it themselves in just a few minutes, though some prefer to have a gunsmith handle it if they're new to working on their Mark IV.
Yes. While the measurement sounds small on paper, the combination of that extra reach and the wider, flat surface area transforms the usability of the bolt release. Users who've added aftermarket grips especially notice the improvement since bulkier grips can make the factory release nearly impossible to reach.
The factory release is low profile and provides minimal thumb contact, requiring significant finger strength to operate. This Volquartsen release extends further, has a flat ergonomic design with deep serrations for better grip, and gives you a much larger surface for your thumb to engage. It's essentially solving the one flaw that many Mark IV owners complain about.
| UPC | 810162014445 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | VC4SR-B |
| Caliber/Gauge | .22 Caliber |
| Model |
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