Beretta 92 Wolff trigger spring installation

Trinimon

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Disclaimer: Modifying your firearm without proper knowledge and precautions can result in fatal injuries!

Figured, I'd post this rough guide here for any folks looking to do the upgrade themselves but was unsure of how to do it.

Ordered my Wolff Reduced Power trigger spring from Brownells way back in early September and they finally got them back in stock. Mine arrived yesterday so I was pretty stoked to get it installed.

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Step 1: Disassembly
- Remove the slide from the frame.
- Remove the grips.
- Decock the hammer and guide it down gently ie do NOT let it fall under spring tension onto the frame with the slide removed.
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- Remove the trigger bar spring by carefully pulling it down and away from the groove in the trigger bar.
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- Remove the trigger bar by pulling it straight out.
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- Remove the slide lock lever as the spring is being used to retain the trigger pin. To do so, carefully remove the slide lock lever by lifting it upwards to clear the frame then pulling it towards you, away from the frame, before releasing the spring tension by rotating it clockwise towards the trigger guard.
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- Push out the trigger pin from the right side (it can only be removed from one direction) and remove the stock plastic trigger and factory trigger spring. If you have one of the older models with the steel trigger, you're in good shape. You can polish the insides parts of the trigger that will mate with the new Wolff trigger spring if you want it to feel a little slicker. Use a drop of oil on some 600 grit followed by some 1000grit wet/dry emery sandpaper on a popsicle stick.
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Step 2: Fitting, installation and reassembly

If you have the newer plastic trigger, you CAN make it work with the Wolff trigger spring. You will have to widen the gap on the trigger.
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(Borrowed pic from internet)

Out of the box, the finish on the retainer part of the Wolff spring was pretty rough.
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After some test fitting and filing of the Wolff spring to ensure it was not binding, I gave it finial polishing. I also compressed the spring by pushing it into the retainer and polished stem of the spring's guide rod. Cleaned it up and lightly oiled it.
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- Replace the trigger and trigger pin into the frame.
- Replace the slide lock lever. To do so, slip the spring over the pin so that both ends of the spring are towards you and the "L" shaped end is towards the bottom of the lever. Sit the straight end on the notch on the lever and try to hold it in place with your finger.
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- Slip the "L" end of the spring into the tiny hole on the frame so that it pokes through and rests on top of the trigger pin.
- Carefully insert the pin of the slide lock lever into the frame while carefully rotating the lever counter-clockwise and pushing inwards. You can add a piece of tape on the frame it you don't want it to get scratched if you are new at this.
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- Install the Wolff trigger spring between the shoulders of the trigger so that the D part of the spring retainer is pointing upwards.
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- Replace the trigger bar and trigger bar spring.
- Replace the slide and close the take-down lever.

Step 3: Function & Safety Check

- Test the trigger in DA and SA. Both actions should drop the hammer.
- Test the trigger reset in DA and SA. Trigger should reset in both instances.
- Test the trigger if returns to normal position if pulled partially back and released. Trigger should not remain partially depressed. If so, the trigger spring is binding. See fitting step above.
- Test safety/decocker lever ie hammer does not operate with safety enabled and trigger pulled. Hammer lowers when safety/decocker enabled.
- Test by cocking the hammer and giving a good rap on the pistol frame to see if it drops on its own. It should not drop.

In SA, I've gone from a 5.7lb trigger to a 4lb with this spring along with the softer Beretta D hammer spring.

Hope this helps someone.
 
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