Midwest Industries Mi Ruger Pc9 M-lok Adaptor Black. This MLOK adaptor easily installs between the receiver and frame of the Ruger PC9 allowing shooters to utilize the full length of the modular rail should their firearms be modified in anyway. This adaptor is constructed of aluminum so it can handle all the firings one might want to throw at it. This adaptor does not have a rear sight. This new adaptor also features dual front lugs to allow shooters to use their existing accessories that mount to the dual lug system. This also means no shift of Ruger receivers when switching adaptors. Specifications for Midwest Industries Mi Ruger Pc9 M-lok Adaptor Black: Manufacturer: Midwest Industries Color: Black Fabric/Material: Aluminum Length: 5.65 in Dimensions: 3.35 X 3.40 X 5.65 in Country of Origin: USA Package Contents: Midwest Industries Mi Ruger Pc9 M-lok Adaptor Black