Volquartsen Firearms Ruger Mark IV Accurizing Kit Curved 2.25 lb Stainless. 25 pound trigger pull for your Ruger MK. These drop-in Pistol Triggers from Volquartsen Firearms need no stoning or fitting. Volquartsen Ruger MK Trigger Kits come complete with all the parts needed to install. Upgrade your Ruger trigger with the Volquartsen Drop-In Accurizing Kit. Specifications for Volquartsen Firearms Ruger MK Accurizing Kit: Manufacturer: Volquartsen Firearms Trigger Shape: Curved Trigger Pull Weight: 2.25 lb Gun Make: Ruger Condition: New Features of Volquartsen Firearms Accurizing Kit for Ruger MK: Complete drop-in kit. 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 No stoning or fitting required. Package Contents: Volquartsen Firearms Ruger MK Accurizing Kit What firearm models does the manufacturer say Volquartsen Firearms Ruger MK Accurizing Kit is compatible with? The manufacturer says that Volquartsen Firearms Ruger MK Accurizing Kit is compatible with Ruger Mark IV Ruger Mark IIVolquartsen Firearms VC4AK-ST: Ruger Mark IV Accurizing Kit Curved 2.25 lb Stainless