sw9ve
 

the trigger on these things are aweful. i like that i can pull back, breathe and then pull it the rest of the way, but i was wondering if you guys would recommend what size spring to put on this thing, im gonna get it changed, just dont know to what, i want more of a hair trigger

You might check with Wolff springs to see if they make spring kits for the sigma.

The SW Sigma series of pistols are notorious for their long, DA revolver style trigger pulls. Not sure you will ever get a "hair trigger" on this gun.