KNS Precision DPMS .308 Push-Button Pivot Pin Black. The steel has a black oxide finish. The button also has a drilled cross hole which allows for the installation of a seal wire to prevent tampering with the guns internals. This pin is fitted with an end cap to simplify pin removal and installation. It also prevents any debris from entering the internal parts of the pin. Compatible with DPMS LR308 S&W M&P10 Black Rain Fallout 10 and PWS Mk2 Rifles. these pins will NOT fit the DPMS GII .308 series rifles. The GIIs pins are a different diameter. Specifications for KNS Precision DPMS .308 Push-Button Pivot Pin: Manufacturer: KNS Precision Finish: Black Oxide Color: Black Caliber: .308 Winchester Projectile Caliber: .308 Caliber Country of Origin: USA Package Contents: KNS Precision DPMS .308 Push-Button Pivot Pin KNS Precision DPMS-308-PBP: DPMS .308 Push-Button Pivot Pin Black