These Volquartsen Magazine Base Pads for the Ruger MK IV (will not fit Ruger MK IV 22/45) provide more positive magazine insertion, easier removal, and lightning fast reloads. CNC-machined from billet aluminum, these base pads fit both the Mamba-TF and Ruger MK IV magazines. These are the perfect complement to target grips that extend below the base of the frame. Available in both 2-pack and 5-pack. 5-packs are engraved #1-5 for easier identification of magazines. FeaturesCNC-machinedBillet aluminum