MPN: 112-026 / 112-027


  • Drop-in replacement of factory P320 curved trigger
  • Reduces trigger pull weight by approximately 35%
  • In X-Series models, reduces pull weight by approximately 10% and overall travel 15%
  • Tool-less installation
  • Maintains factory safety values


  • Material: Steel


  • Works with UPGRADED Sig Sauer P320 model pistols ONLY (including the X-Series)
  • Not for use in non-factory upgraded P320
  • Does not function in Sig P250


  • 1x APEX Advanced Trigger for Sig P320


If you need a Sig P320 trigger upgrade, consider the SIG P320 Apex trigger. This highly reputable manufacturer has been supplying gun owners with products they can trust since its founding and continues to do so today.

SIG P320 Apex Trigger: Commitment to Quality

Apex Tactical Specialties, Inc. was created to serve competitive shooters, law enforcement personnel and those who understand the need for a means to defend themselves and their families. The organization is driven by the desire to provide high-quality materials and a continuously evolving product line that includes the Sig P320 trigger factory replacement. The mission of Apex is to provide stellar customer service and parts that can withstand daily wear and tear. Apex will not endorse any product that has not been thoroughly evaluated by the trained professionals at the company. Field testing, failure analysis, and personal experience all played a role in determining whether or not the Sig P320 flat trigger was suitable for release to the public. With a commitment such as this, Apex parts such as the Sig P320 trigger can be relied upon to provide outstanding performance.

Flat or Curved Configurations

This Sig P320 trigger upgrade is a drop-in design and is easy to install without the need for any special tools or expertise. The installation of the Apex trigger P320 will reduce the trigger pull weight by approximately 2 lbs. and is available in both flat and curved configurations. This Sig P320 Apex trigger upgrade is designed for use in upgraded Sig Sauer P320 models only and will not work in non-upgraded models.

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Reviews (3)

  • P320 flat trigger

    Posted by Weldon on 28th Jan 2020

    Very fast delivery,, amazing difference in trigger action,, very easy to install, takes about 5 minutes. Can't go wrong.

  • Apex P320 trigger

    Posted by Alex Pelletier on 6th May 2019

    Best upgrade you can do to your 320 Don’t hesitate and just order it Super fast shipping also

  • Great Trigger

    Posted by Fred on 10th Feb 2018

    The Flat faced trigger is not for everyone but it works fine for me. After the voluntary upgrade, the enhanced factory trigger didn’t feel right and my shot placement was considerably off. After changing the trigger, my groups at 10 feet and better improved. No tools to install. Again, find the trigger that works for you.

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