Crescent Davis side by side 16 gauge Shotgun Stainless Steel Firing Pin. Crescent Made this under many different Names - A Few Were: Knickerbocker Knockabout American Gun Co. Our Crescent Davis Firing Pins are precision machined using our CNC Swiss turning centers. The firing pins are made from domestic 17-4 Stainless Steel then heat treated to an H900 condition. We machine the Crescent Davis firing pins from SS to help eliminate internal corrosion issues and improve reliability. The heat treated condition helps maximize the life of the firing pin by increases in Strength and Toughness. Pin Length 1.123 inches, Tip Diameter 0.135 inches. Made in the USA!!