Heckler koch Hk4 three caliber conversion kit. Great condition, looks new! Not sure if it was used. The item “Heckler Koch Hk4 Three Caliber Conversion Kit” is in sale since Sunday, October 22, 2017. This item is in the category “Sporting Goods\Hunting\Gun Parts\Magazines”. The seller is “striderworks” and is located in Andover, Minnesota. This item can be shipped to United States.

• Brand: Heckler & Koch