Heckler & Koch AT-P7 K3 9mmk. 380 ACP conversion kit for an HK P7K3. This is used to convert your 7.65mm. 32 ACP P7k3 to a. Comes with 9K barrel and two 8 round. 380 magazines and case. This item is New Old Stock and has never been used or installed. Both magazines have never been used or loaded. Extremely rare and hard to find!