There seems to be a little variation between pistols, but here is my typical weights with various Apex configurations:
1) FSST with Apex trigger spring: 4 lbs with essentially zero uptake.
2) DCAEK with factory trigger spring: 3.5 lbs
3) DCAEK with Apex trigger Spring: 5 lbs.
Martial arts systems that focus on attacks to the knees, eyes, or throat without the fundamentals of grappling and boxing are the fighting equivalent of practicing once a year with a Desert Eagle, loading it with MagSafe bullets, and then thinking that you are a gangsta version of Wyatt Earp.