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Thread: DA/SA vs SFA vs ... -- 2019 Edition

  1. #141
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    Quote Originally Posted by GlockenSpiel View Post

    Additionally, for guns like Berettas that fully decock the hammer, if you run them with no safety, aren't you just relying on the firing pin block to prevent an impact to the hammer from setting it off? I'm not sure how that's practically better than a glock either.



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  2. #142
    Hammertime
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    Quote Originally Posted by GlockenSpiel View Post
    Doesn't the LEM have a precocked internal hammer when at rest? That seems more glock-like and less like an inert/zero energy system.
    This is correct, but without the external hammer, the LEM internal hammer portion does not have the ability or enough momentum to strike the firing pin with any significant force.

  3. #143
    Quote Originally Posted by spinmove_ View Post
    https://youtu.be/9aQ_YNd35zk


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    Presumably, that gun has a normal, working firing pin block, which is why it won't fire when the fully-lowered hammer is impacted.

    My point is, if you're carrying a DA beretta without the safety on, you're relying on the firing pin block. Why would you not then trust the firing pin block to do the same in a striker-fired gun?

  4. #144
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    Quote Originally Posted by GlockenSpiel View Post
    Presumably, that gun has a normal, working firing pin block, which is why it won't fire when the fully-lowered hammer is impacted.

    My point is, if you're carrying a DA beretta without the safety on, you're relying on the firing pin block. Why would you not then trust the firing pin block to do the same in a striker-fired gun?
    Great question. As long as the firing pin block is mechanically sound, which the design certainly seems to be in a Glock, then I personally wouldnít and donít have an issue relying on it. Then again Iíve Gadgeted my carry Glocks and I donít worry about it. But thatís just me.

    Glockís design is prove and sound. Unless you can show evidence of a particular sample of being broken or unsound, then there is no issue. Carry on and stop worrying.


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  5. #145
    Member Alpha Sierra's Avatar
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    Quote Originally Posted by GlockenSpiel View Post
    Additionally, for guns like Berettas that fully decock the hammer, if you run them with no safety, aren't you just relying on the firing pin block to prevent an impact to the hammer from setting it off?
    Quote Originally Posted by spinmove_ View Post



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    Does it really matter what's keeping that Beretta from AD'ing if it never ADs?

  6. #146
    Hobbyist JAD's Avatar
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    I would say that we're talking about a separate category of undesirable behavior, Spontaneous Discharges vs. Accidental Discharges. Let's specify that ADs almost always have a human behavior cause, and SDs have purely mechanical causality.

  7. #147
    Pizzagun Dilettante Joe in PNG's Avatar
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    Is the mechanical device keeping a Beretta 92 or Glock from an AD all that different from the mechanical device keeping a Ruger or S&W (et al) revolver from an AD?
    Not really.
    "You win 100% of the fights you avoid. If you're not there when it happens, you don't lose." - William Aprill

  8. #148
    Quote Originally Posted by GlockenSpiel View Post
    Additionally, for guns like Berettas that fully decock the hammer, if you run them with no safety, aren't you just relying on the firing pin block to prevent an impact to the hammer from setting it off? I'm not sure how that's practically better than a glock either.

    The Beretta M9 and 92a1/96a1 rely on two different safety mechanisms with regards to the firing pin.

    Firstly, the Beretta uses a 2-piece firing pin. With the safety latch in the downward ("safe") position, the rear half of the pin is rotated downwards, out of alignment with the front half of the firing pin. When the hammer is decocked, or a worst-case drop scenario happens, there is physically no way for the blunt force to cause the firing pin to strike the bullet's primer...this is of course assuming that all the mechanical parts are properly installed and using realistic testing scenarios (if you drop your loaded firearm off the Empire State building, anything is possible).

    Secondly, the Beretta has a trigger safety. Unless, the trigger is pulled rearward, the front part of the firing pin will be "blocked" from any forward impulse (this is what people will traditionally refer to as the firing pin "block").

    Then of course there is the DA/SA trigger pull which is safety feature in and of itself.

    I'm not sure how the Beretta's firing pin "block" compares to whats used in other designs (like the Glock), but I'm fairly certain the rotating, 2-piece firing pin design is mostly unique to Beretta. So the Beretta definitely has different safety features from that of a typical SFA and even some DA/SA pistols.

    Does that make it more safe for carry?

    Well I think so, but that's subjective.

  9. #149
    Quote Originally Posted by Alpha Sierra View Post
    Does it really matter what's keeping that Beretta from AD'ing if it never ADs?
    Couldn't you say the same about glock...?

  10. #150
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    Quote Originally Posted by Alpha Sierra View Post
    Does it really matter what's keeping that Beretta from AD'ing if it never ADs?
    Does it matter? Not really. Is it interesting to know the ďwhyĒ? Yes. Is it ADing? Nope. Put a mechanically sound Glock to the same test. Iíll bet it passes.


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