Smith and Wesson Sigma, SD9VE, and SD9 2.0 trigger weight and upgrades! Apex and MCARBO spring kits

Testing the trigger weight on my SW9VE pistol after the Apex kit

Installing an MCARBO sear spring

Testing the trigger pull against my SD9VE which also has an Apex spring kit, and my SD9 2.0 which has a factory trigger