Volquartsen Firearms Accurizing Kit Ruger MK IV Pistol Black/Gold. As a complete drop-in kit the Volquartsen Firearms Accurizing Kit Ruger MK IV Pistol comes with a CNC machined disconnector target hammer hammer bushing target sear target trigger with plunger and spring. This is everything you need to upgrade the firing system on your competition pistol to have a crisp 2.25 pound trigger pull helping you stay as accurate as possible in your next outing. Specifications for Volquartsen Firearms Accurizing Kit Ruger MK IV Pistol: Manufacturer: Volquartsen Firearms Color: Gold Black Fabric/Material: A2 Tool Steel Trigger Pull Weight: 2.25 lb Gun Model: Ruger Mark IV 22/45 Ruger Mark IV Country of Origin: USA Gun Type: Pistol Features of Volquartsen Firearms Accurizing Kit Ruger MK IV Pistol Kit fits all variations of the Ruger MK IV (including 22/45 and 22/45 Lite); Hammer and Sear are wire EDM Cut from A2 Tool Steel; Package Contents: Volquartsen Firearms Accurizing Kit Ruger MK IV Pistol What firearm models does the manufacturer say Volquartsen Firearms Accurizing Kit Ruger MK IV Pistol is compatible with? The manufacturer suggests that Volquartsen Firearms Accurizing Kit Ruger MK IV Pistol is compatible with Ruger Mark IV Ruger Mark IV 22/45Volquartsen Firearms VC4AK-GT: Accurizing Kit Ruger MK IV Pistol Black/Gold