The H&K 14430BK Knives Patrol Automatic Knife Black Plain Edge Blade. This HK 14430BK knife is using a lightweight composite handle on an automatic platform with the Patrol knife. It's a solid design and build that offers push button action and a side-mounted safety. The 14430bk Patrol knife has a black finished D2 steel blade with a plain edge cutting edge. Tip-up carry is accommodated with the reversible pocket clip.