WMD Guns Pivot Pin .308 Nitride Black Pivot Pin .308. 308 nitride finish on these pins provide long-lasting protection against corrosive elements and a clean look. If you are looking to replace your pivot pin or need a spare look no further than these WMD Guns .308 nitride Pivot Pins. These pins are carefully machined using industry-grade steel for a strong and flexible product that will not let you down. These WMD Guns .308 Nitride Pivot Pins pair well with our line of WMD Guns AR Parts and are an economical and rugged addition to your AR platform. If you are looking to build a .308 upper these parts are a must and will provide great service life. Specifications for WMD Guns .308 Nitride Pivot Pin: Manufacturer: WMD Guns Finish: Nitride Color: Black Caliber: .308 Winchester Projectile Caliber: .308 Caliber Package Contents: WMD Guns .308 Nitride Pivot Pin WMD Guns Pivot Pin .308: Pivot Pin .308 Nitride Black