Volquartsen Firearms Target Trigger for MKII and MKIII Black. Specifications for Volquartsen Firearms Target Trigger for MKII and MKIII: Manufacturer: Volquartsen Firearms Fabric/Material: CNC-Machined Trigger Shape: Curved Gun Make: Ruger Gun Model: Ruger Mark III Ruger Mark II Country of Origin: USA Package Contents: Volquartsen Firearms Target Trigger for MKII and MKIII What firearm models does the manufacturer say Volquartsen Firearms Target Trigger for MKII and MKIII is compatible with? The manufacturer says that Volquartsen Firearms Target Trigger for MKII and MKIII is compatible with Ruger Mark II Ruger Mark IIIVolquartsen Firearms VC2TT: Target Trigger for MKII and MKIII Black