Adjusts for High or Low Velocity AmmoVolquartsen Recoil Rod and Spring Kit- Provides the best spring tension for reliable function with high or low velocity ammo. This innovative design makes it quick and easy to match your spring weight to your ammo of...

Volquartsen Competition Bolt for Ruger Mk II, III, and IVEliminate stovepipes, failures to fire and improve the overall performance of your Ruger Mark II, III*, IV or Mark IV 22/45 pistol with this Competition Bolt! (* MKIII must remove chamber indicator...

Volquartsen V-Cut Single Port LLV-4 Compensator BlackScrew on compensator/muzzle brake fits the Volquartsen LLV-4 Upper (barrel) for Ruger® MK IV® pistols. Beautifully shaped to match the unique contour of the LLV-4 system. It is CNC-machined...

Volquartsen Accessory Rail for LLV Barrels  Under barrel Picatinny accessory rail fits both Picatinny and Weaver style accessories. Mounts with two 8-32 screws under LLV barrels. Newer Volquartsen LLVs are pre-drilled and tapped. We can...

Volquartsen Exact Edge Extractor- Replaces stamped sheet metal Ruger factory Mk I, II, Mk III, Mk IV, 10/22, and 10/22 Magnum extractor with a closer fitting, sharper edged, machined tool steel extractor for better function and reliability. The Exact...

Volquartsen SureStrike Firing Pin for Ruger MK I, II, III and IV (Including 22/45)   This SureStrike firing pin is designed to eliminate light strikes on the Ruger MK I, II, III and IV pistols (including 22/45). Machined .004" wider than...