Firing Pin Impression

Discussion in 'M, C, L and S Series' started by Soverign, Aug 20, 2007.

  1. Soverign

    Soverign Premium Member

    I noticed that my M40-A1 leaves a "unique" impression on the primers.
    Not just a dent, but more like a gash.
    Its as if the pin is not retracted while the round it being ejected.
    As the gash is the direction of the ejector mark.

    Anyone else noticed this?

  2. MrApathy

    MrApathy Active Member

    yes its a result of the design. striker fired pistols tend to do this specially when the striker is tensions to rest forward when not set.

    when the pistol is new it can be little more pronounced

  3. Dag

    Dag Guest

    Hi Soverign

    Take a look at the thread below. There is an extensive discussion of the firing pin mark you mentioned. I had similar problems, which have since gone away. Don't know exactly why, but Steyr pistols are known for needing a breakin period. So maybe the firing pin, and the opening in the breech face where it protrudes, need to seat together, making it easier for the point of the pin to retract. I can't say for sure, but the mark doesn't seem to cause any problems, and will likely get much less noticeable over the next several hundred rounds. Don't worry about it for now.