Sometimes referred to as the Walther Transitional Model 3/4, this represents a transition from the model 3, by improving the sights, enlarging the frame and increasing magazine capacity. Like the model 3, the extractor and ejection port are on the left side of the slide. The left side of the slide is marked "SELBSTLADE-PISTOLE CAL. 7.65 WALTHER'S PATENT" over the standard Walther banner. The forward portion of the slide has a serrated pivoting takedown catch. The right is simply marked "MADE IN GERMANY". Fitted with checkered hard rubber grips with the caliber designation molded into the tops.