How to Improve Trigger Function for a Smith & Wesson Sigma

The Smith and Wesson Sigma series is a line of polymer-frame pistols chambered in 9mm and .40-caliber. These handguns are among the American manufacturer's value line of home defense and personal defense handguns. They are stamped with the label SW9VE, which stands for the Smith and Wesson Value Edition. The trigger on the Sigma series is not adjustable, but there are steps you can take to improve the functionality of the trigger and the overall performance of the weapon.

Things You'll Need

  • Gun oil
  • Cotton rag
  • Practice ammunition
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Instructions

    • 1

      Load the weapon at a safe firing line or shooting range. The Sigma comes with two 16-round magazines. Load them both with 16 rounds of round-nose target ammunition.

    • 2

      Shoot the Sigma at a safe target until both clips are empty, then repeat the process with two additional magazines. After 64 rounds, the trigger of the Sigma will begin to loosen up. This is part of the normal break-in period for the trigger.

    • 3

      Pull the slide back until it locks in place and make sure the Sigma is not loaded.

    • 4

      Flip up the takedown lever on the left side of the slide.

    • 5

      Release the slide and pull the trigger to disconnect the slide from the frame. Pull the slide gently off the front of the frame.

    • 6

      Apply a thin layer of oil to all metal surfaces inside the frame, including the spring assembly on top of the trigger. This will lubricate and improve the pull of the trigger.

    • 7

      Wipe off any excess oil on the frame with a cotton rag.

    • 8

      Place the slide back on the front of the frame and pull it back until it locks into place.