Volquartsen Extended Magazine Release for MK II and Mk II 22/45 Pistols This CNC machined magazine release is extended for more gripping surface so that Ruger Mk II mag changes are faster, easier and more precise. It's designed to work with the oversized target style grips, too. This is a "drop-in" mag release... It's easy to install and requires no gunsmithing. Available in both black and silver Fits the MK II and Mk II 22/45 only.