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1911 firing pin

bellcatbellcat Senior MemberPosts: 1,856 Senior Member
So I bought a new firing pin and spring for my SA 1911 to hopefully get rid of random light primer strikes. I read where SA puts in the lightweight pin with extra strong spring for some safety reasons?  
As shown in pic, the tip of firing pin is too thick, and won’t go into firing pin hole. 
Is this a gunsmith job? I’ve always thought it was a standard pin?
Any input would help.
"Kindness is the language the deaf can hear and the blind can see." Mark Twain

Replies

  • Elk creekElk creek Senior Member Posts: 6,450 Senior Member
    I would try a standard weight firing pin return spring before cutting anything. And clean the channel well. 
    Aim higher, or get a bigger gun.
  • earlyagainearlyagain Posts: 6,749 Senior Member
    You have two different applicable pins. The top one is for Series 70 systems. The bottom is for Series 80 systems as evidenced by the rear radius for receipt of the firing pin stop. 


  • GunNutGunNut Posts: 5,796 Senior Member
    IIRC there are two firing pins for the 1911.  The standard .45 and the slimmer 9mm.  I believe SA uses the slimmer 9mm exclusively regardless of the caliber of the gun.  This is done to minimize the potential for an inertia driven unintentional firing pin strike during a drop.
    Old West Saying: God created men, but Col. Sam Colt made them equal.

    General George Patton:  “Watch what people are cynical about, and one can often discover what they lack.”

  • GunNutGunNut Posts: 5,796 Senior Member
    edited July 28 #5
    I stand corrected from the Wilson Combat website, there are 3 diameters:

    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 Combat 1911s of all calibers and many others uses a .38 Super/9mm pin regardless of caliber of .065” diameter.
    Old West Saying: God created men, but Col. Sam Colt made them equal.

    General George Patton:  “Watch what people are cynical about, and one can often discover what they lack.”

  • SpkSpk Senior Member Posts: 3,966 Senior Member
    edited July 28 #6
    bellcat said:
    So I bought a new firing pin and spring for my SA 1911 to hopefully get rid of random light primer strikes. I read where SA puts in the lightweight pin with extra strong spring for some safety reasons?  
    As shown in pic, the tip of firing pin is too thick, and won’t go into firing pin hole. 
    Is this a gunsmith job? I’ve always thought it was a standard pin?
    Any input would help.
    I'm guessing that the top pin is your Springfield pin and the bottom one is the one you ordered. I'm also assuming you have a series 70 1911A1. I'm further assuming it's a full size or Commander size govt model? As suggested above, have you considered just changing the firing pin return spring?

    They're extra power for a reason...
    These springs are approximately 40% stronger than the factory springs and provide an increased margin of safety by helping to reduce the chance of accidental discharge due to the firing pin contacting the cartridge primer in the event of dropping the pistol in a loaded condition or from the increased inertia imposed on the firing pin with extra power recoil springs.
    Also note: Springfield 1911 Series pistols use the same springs as Colt 1911 Series Pistols with the exception of the hammer springs in some instances.

    The series 80 design change pretty much renders that extra power need unnecessary but I know alot of folks who prefer the series 70 design (less things that can go wrong).

    You can still buy the standard power firing pin return springs but you'll be assuming any risks real or imagined involved with using them. Btw, Wolff has the springs in stock just use the link above.

    Also, you can still buy a replacement Springfield Armory firing pin online:

    Or use one of the other sources such as Wilson Combat but you'll have to select their 38 Super/9mm firing pins (.0685" to .0695") because the ones listed as .45 are too fat.








    Never argue with stupid people, they will drag you down to their level and then beat you with experience -- Mark Twain
    How easy it is to make people believe a lie, and [how] hard it is to undo that work again! -- Mark Twain

  • bellcatbellcat Senior Member Posts: 1,856 Senior Member
    Thanks everyone! I’ll go to work on it soon! 
    And yes, the current pin is on top in picture.
    "Kindness is the language the deaf can hear and the blind can see." Mark Twain
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