Pro Action Trigger

Flat Trigger
for the SIG SAUER® P320® and X-Five


Keres Dynamics' PRO ACTION patent pending design allows for quick indexing and decreased pull weight. The increased leverage reduces the trigger pull weight up to 25% and features a center rib and curved tip to provide fast and consistent indexing.

Available in Black & Silver hard annodized finish.



  • Flat face provides increased leverage reducing trigger pull weight by up to 25%, dependant on individual gun tolerances and user indexing.
  • Vertical rib and curved tip provides faster indexing both with and without gloves.
  • Rib geometry is optimized to provide a familiar feel for shooters transitioning from GLOCK® handguns.
  • Same geometry as our Pro Adjust trigger.
  • Vertical break-over provides unmatched feel and confidence while holding on target.
  • Precision machined from ultra-high strength Tennalum® 7068-T6511 aluminum alloy giving our parts higher yield strength and equivalent hardness to 4130 Cr-Mo steel, yet remains as light as other 6000 and 7000 series alloys. Scroll down for more details.
  • All Keres triggers are designed to be used with factory upgraded or newer models.
  • MIL-A-8625 Type III Hard anodizing with Teflon impregnation for reduced friction and wear.
  • Lifetime replacement warranty

Material Selection

At Keres Dynamics, we recognize a number of customers were concerned with the military drop test results of the P320. While SIG addressed the issue with their upgrade program, we wanted to design our parts to be as light or lighter than the factory upgraded triggers but with the same strength and reliability. In our research, we came upon Tennalum® 7068-T6511 aluminum. Tennalum® gives our parts greater strength than 4130 chromoly steel, but with the lighter weight of aluminum. By comparison, Tennalum® is nearly 250% stronger than 6061 aluminum, but only 1/3 the weight of 4130 steel. This made Tennalum® an ideal choice to achieve our design and performance goals while maintaining the light weight necessary to meet or exceed the drop test standards placed on the P320® for service. Because of this material selection, we are able to manufacture a feature-rich trigger that is 1/2 the weight of the factory trigger, but just as strong.