Wilson Combat Firing Pin .38 Super 9mm 70 or 80 Series. This part is a drop-in part for Series 70 or Series 80 style 1911 designs and for guns with a standard .45 ACP USGI/Colt diameter (.093") firing pin; Note on 1911 firing pins:; Most 1911 handguns on the market use one of three different diameters of firing pins.; Standard .45 ACP/USGI 1911 is .093".; Most Springfield Armory Pistols use .075"; Current Production Wilson of all calibers and many others uses a .38 Super/9mm pin regardless of caliber of .065" diameter; If the firing pin diameter needed is unknown check the hole size in the recoil face or measure your pin diameter to determine the caliber firing pin needed for your slide before ordering; Specifications for Wilson Combat Firing Pin: Manufacturer: Wilson Combat Gun Model: 1911 Condition: New Package Contents: Wilson Combat Firing Pin What firearm models does the manufacturer say Wilson Combat Firing Pin is compatible with? The manufacturer suggests that Wilson Combat Firing Pin is compatible with 1911Wilson Combat R10-38: Firing Pin .38 Super 9mm 70 or 80 Series