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Berretta 92S
- Thread starter spearman
- Start date
357 Python
New member
I'm with TunnelRat, it sounds like a problem with the sear and hammer. Take it to a competent gunsmith and have them install a new sear and hammer.
Not an ideal situation. Any time you get the hammer following the slide you also get the potential for unintentional full auto fire.
Honest question, with a firing pin block can full auto fire happen as you describe? I know the S doesn't have a firing pin block so it's a different animal, but if it did that wouldn't be possible right?
Note that the discussion below relates to the 92FS which is fundamentally different from the 92S that the OP asked about.
Normally, if the trigger is to the rear then the 92FS firing pin block is deactivated, allowing the firing pin to reach the primer.
Typically, immediately after firing a shot the trigger would still be held to the rear and therefore one might expect that the firing pin block would be deactivated. However, if everything is working right there's a disconnector which is activated by the slide cycle that prevents the trigger (even though it's being held to the rear) from keeping the firing pin block deactivated. So the shot fires, and as the slide cycles, the disconnector "deactivates" the lever that pushes up on the firing pin safety. Now the trigger will have to be released all the way forward and pulled again before the lever will work and the firing pin safety can be deactivated again.
So, in a properly working Beretta 92FS, you have at least a double layer of safety after firing a shot. The hammer is held back by the sear so it doesn't hit the firing pin, and the disconnector deactivates the lever which operates the firing pin safety so that the firing pin safety is re-engaged until the trigger is released and pulled again.
This doesn't mean you're home free though. Firing pin safeties/firing pin blocks are normally intended to be a fail-safe mechanism. That is, they are designed to work once in awhile to provide a safety net. Consequently, they're often not designed to take a steady pounding. So if they are actually being hit by the firing pin routinely, there's the potential for the block or the firing pin to fail, or be damaged. Depending on the failure mode, the result can be very bad. For example, the firing pin block could potentially be damaged/peened which could result in the firing pin being driving past the damage/peening in the block but then being jammed in the forward position. That can result in full-auto fire in the best case scenario or out-of-battery firing in the worst case.
Ok, back to the 92S.
It would seem that in the 92S, there's some mechanism designed to prevent the gun from firing in a hammer follow situation or the OP would be experiencing full-auto fire (or at least doubles and triples). I just don't know how the 92S works.
But the point is that if the sear is allowing the hammer to follow, now the only thing between safety and full-auto fire is a single safety mechanism. Even though it's not a firing pin block; there's still the likelihood that the safety mechanism, whatever it is, is probably not intended to operate routinely and therefore the known problem should be repaired before the gun is fired again.
Normally, if the trigger is to the rear then the 92FS firing pin block is deactivated, allowing the firing pin to reach the primer.
Typically, immediately after firing a shot the trigger would still be held to the rear and therefore one might expect that the firing pin block would be deactivated. However, if everything is working right there's a disconnector which is activated by the slide cycle that prevents the trigger (even though it's being held to the rear) from keeping the firing pin block deactivated. So the shot fires, and as the slide cycles, the disconnector "deactivates" the lever that pushes up on the firing pin safety. Now the trigger will have to be released all the way forward and pulled again before the lever will work and the firing pin safety can be deactivated again.
So, in a properly working Beretta 92FS, you have at least a double layer of safety after firing a shot. The hammer is held back by the sear so it doesn't hit the firing pin, and the disconnector deactivates the lever which operates the firing pin safety so that the firing pin safety is re-engaged until the trigger is released and pulled again.
This doesn't mean you're home free though. Firing pin safeties/firing pin blocks are normally intended to be a fail-safe mechanism. That is, they are designed to work once in awhile to provide a safety net. Consequently, they're often not designed to take a steady pounding. So if they are actually being hit by the firing pin routinely, there's the potential for the block or the firing pin to fail, or be damaged. Depending on the failure mode, the result can be very bad. For example, the firing pin block could potentially be damaged/peened which could result in the firing pin being driving past the damage/peening in the block but then being jammed in the forward position. That can result in full-auto fire in the best case scenario or out-of-battery firing in the worst case.
Ok, back to the 92S.
It would seem that in the 92S, there's some mechanism designed to prevent the gun from firing in a hammer follow situation or the OP would be experiencing full-auto fire (or at least doubles and triples). I just don't know how the 92S works.
But the point is that if the sear is allowing the hammer to follow, now the only thing between safety and full-auto fire is a single safety mechanism. Even though it's not a firing pin block; there's still the likelihood that the safety mechanism, whatever it is, is probably not intended to operate routinely and therefore the known problem should be repaired before the gun is fired again.
357 Python
New member
Even though I am a Beretta Armorer that course was based on the 92FS. I am uncertain of the differences in the modifications in the early 92 series. When our local County police switched from revolvers to the Beretta they carried the 92SB and later issued the 92F when it came out. That was after 1986. The best I can suggest is to call Beretta's Customer Service and they should be able to put you in touch with the right person.