Volquartsen Ruger Mark IV, MK4, 22/45, Mark 4 Pistol Competition Kit VC4PCK For Sale

Pete’s Pillars proudly offers the Volquartsen Pistol Competition Kit, a comprehensive internal upgrade package for Ruger Mark IV pistols, including the MK IV 22/45 and 22/45 LITE. This kit is designed for shooters who want a cleaner trigger, smoother cycling, and improved reliability in one coordinated setup—without piecing parts together individually.

The Pistol Competition Kit combines Volquartsen’s Accurizing Kit with their Bolt Tune-Up Kit, addressing both trigger feel and bolt operation at the same time. The result is a crisp, consistent trigger pull paired with smoother cycling and more reliable ignition, making this a practical upgrade for range work, competition, or general rimfire use.

Most setups will see a clean trigger pull of approximately 2.25 lbs with the included target trigger configuration, or closer to 1.75 lbs when paired with Volquartsen’s 19.22 Flat Trigger (sold separately). The bolt components help reduce common issues such as stovepipes and light strikes, contributing to more predictable performance across a wide range of ammunition.

All components are manufactured to Volquartsen’s exacting standards using premium materials and precise machining processes. Parts are packaged by Volquartsen to work together as intended, saving time during setup and adding value compared to purchasing components individually. Multiple trigger finish options are available depending on configuration.

Pete’s Pillars ships orders fast and securely packaged and only carries products we trust and stand behind. Volquartsen continues to be a benchmark name in precision and target rimfire shooting, and this kit reflects that reputation.

• Volquartsen Accurizing Kit components

• Volquartsen Bolt Tune-Up Kit components

• Tunable aluminum trigger

• Factory-matched internal components

Pete’s Pillars has a long-standing relationship as an authorized Volquartsen dealer, representing premium rimfire components built for consistency, reliability, and shooter confidence. We also carry a broad selection of rimfire and precision shooting parts, making us a trusted source for complete setups—not just individual components.

• Fits Ruger Mark IV pistols, including 22/45 and 22/45 LITE

• Approx. 2.25 lb trigger pull with target trigger configuration

• Approx. 1.75 lb trigger pull when paired with Volquartsen 19.22 Flat Trigger (sold separately)

• Improves trigger feel, cycling smoothness, and ignition consistency

• Designed for use with OEM Ruger or Volquartsen components

• Compatibility with other aftermarket components is not guaranteed

• Multiple trigger finish options available

• Made in the USA

• Sold by an Authorized Volquartsen Dealer

• Combined Accurizing Kit and Bolt Tune-Up Kit in one package

• Cleaner, more consistent trigger pull

• Smoother cycling and improved Volquartsen components

• Designed specifically for Ruger Mark IV platforms

Looking for Ruger Mark IV, 22/45, or 10/22 upgrades? Pete’s Pillars carries a wide selection of trusted components, including Volquartsen parts, Green Mountain barrels, chassis systems, CZ 457 parts, and Pete’s Pillars kits.

Installation Note:
Installation should be performed by a competent individual familiar with safe and responsible firearm handling. Always ensure the firearm is unloaded before installation or maintenance. Volquartsen may update or revise small internal parts over time while maintaining overall function and performance.