1911 fit check. This post will deal with the firing pin of 1911 style handguns.
The inertial firing pin of a 1911 should always be checked when replacing. For 1911, 1911A1 and series 70 style, firing pins measure between 2.290” and 2.296.” A replacement that is longer must be dressed to length. 80 series firing pins are shorter, typically 2.262 to 2.265.”
The standard diameter on .45 cal, all series, are 0.095” to 0.096.” .38 Super and 9mm pins are 0.070” to 0.071.” Be careful they don’t get mixed up.
Factory firing pin springs are usually 1.170” in length, and must not be shortened. Longer is safer in this case.
Watch for evidence of end wear and diameter enlargement.