Ruger 90655 Magazine Well Insert Assembly Ruger PC Carbine Compatible With Ruger American Pistol 9mm Magazines, Flush Fit, Black Polymer $22.94
Ruger 90653 Magazine Well Insert Assembly Ruger PC Carbine 9mm Luger/40 S&W Compatible With Ruger SR-Series & Security-9 Magazines, Flush Fit, Black Polymer $22.94