Description Heckler & Koch HK4 chambered in .380 ACP with two, seven round removable magazines and a 3.35″ barrel. Manufactured in 1981 with IB date code. Black anodized frame with checkered polymer grips and serrated heel magazine release. Double/single action trigger and hammer. Blued serrated slide with mounted safety lever. Fixed blade and notch iron sights. Must ship to a FFL holder. Condition: Very Good with light scratches and handling wear. Light internal wear from operation. A few small specks of metal oxidation on the slide. Bright and clean bore with strong rifling. Barrel Length: 3.35″ Serial: 31778 Manufacturer: HECKLER & KOCH Year: 1981 Caliber: .380 ACP Model: HK4 Book# 07157