Volquartsen Firearms VC Target Frame 1911 Style for Ruger MK Hogue Grips Black Alloy. It is a complete frame that is shipped with a clean crisp 2.25 lb trigger pull. No magazine disconnect is included with this frame. Specifications for Volquartsen Firearms VC Target Frame 1911 Style for Ruger MK: Manufacturer: Volquartsen Firearms Gun Make: Ruger Gun Model: Ruger Mark Series Condition: New Country of Origin: USA Fabric/Material: Aluminum Package Contents: Volquartsen Firearms VC Target Frame 1911 Style for Ruger MK Accurizing Kit (Extended Bolt Release CNC-machined Target Trigger wire EDM-cut Target Hammer and Target Sear) CNC-Machined Disconnector Extended Safety What firearm models does the manufacturer say Volquartsen Firearms VC Target Frame 1911 Style for Ruger MK is compatible with? The manufacturer says that Volquartsen Firearms VC Target Frame 1911 Style for Ruger MK is compatible with Ruger Mark SeriesVolquartsen Firearms VC45NF-H-B: VC Target Frame 1911 Style for Ruger MK Hogue Grips Black Alloy