WMD Guns Cam Pin 5.56 NiB-X Nickel. With its improved durability and more importantly environmental conditions over conventional steel and aluminum these are the type of parts that WMD Guns chooses to put into production. The NiB-X coating that WMD Guns offers is an incredibly durable and highly corrosion resistant coating that provides excellent wear properties and great heat resistance. These particular WMD Guns parts are even suitable for carbines because of their thin profile and custom designed molds. Overlay your springs with it and you'll feel the improved performance. Specifications for WMD Guns NiB-X Cam Pin: Manufacturer: WMD Guns Color: Nickel Quantity: 1 Finish: NiB-X Package Contents: WMD Guns NiB-X Cam Pin WMD Guns 1-NIBXCP: Cam Pin 5.56 NiB-X Nickel