Volquartsen Firearms Extended Magazine Release and Base Pad Kit for MK IV 22/45 2-pack Aluminium Black. Our new Magazine Base Pads for the MK IV 22/45 make magazine insertion and removal quicker and easier-for lightning fast reloads. You don't have to be a competitive shooter to enjoy the benefits of our Magazine Base Pads. CNC-machined from billet aluminum these base pads will make those days at the range even more enjoyable as you switch magazines with ease. These will work with factory magazines and will also convert any Ruger MKIII magazine into a Ruger MK IV 22/45 magazine. These will work with factory magazines and will also convert any Ruger MKIII magazine into a Ruger MK IV 22/45 magazine. Specifications for Volquartsen Firearms Extended Magazine Release and Base Pad Kit for MK IV 22/45: Manufacturer: Volquartsen Firearms Gun Make: Ruger Gun Model: Ruger 22/45 Color: Black Fabric/Material: Aluminum Condition: New Country of Origin: USA Features of Volquartsen Firearms Extended Magazine Release and Base Pad Kit for MK IV 22/45 Only compatible with 22/45-style pistols Approximately 5oz Package Contents: Volquartsen Firearms Extended Magazine Release and Base Pad Kit for MK IV 22/45 Only compatible with 22/45-style pistols What firearm models does the manufacturer say Volquartsen Firearms Extended Magazine Release and Base Pad Kit for MK IV 22/45 is compatible with? The manufacturer suggests that Volquartsen Firearms Extended Magazine Release and Base Pad Kit for MK IV 22/45 is compatible with Ruger 22/45Volquartsen Firearms VC4MRB-2: Extended Magazine Release and Base Pad Kit for MK IV 22/45 2-pack Aluminium Black