Where to get Steyr m9 spring

[bandit86]

Wihout a round chambered the trigger is nice and smooth, when shooting the second stage I pull a while and it gets incredibly hard just before it fires. If I pull the trigger fast it's not as bad, but pulling slowly at first I thougt the safety was on

So I took it apart and checked and cleaned, the spring that keeps the sear retracted was bent. Where can I get steyr springs and parts?

 

[bandit86]

Ok, I found this and it sounds like my problem

Quote from other forum"If you get one that does not "stack", it is the best OTB trigger on any polymer gun (striker fired). Mine stacks - after normal take up it breaks once, then breaks again - no amount of polishing on the striker guide rod or dry firing will clean it up. Worse yet, it varies sometimes as to how much it stacks. When it doesn't stack it is GREAT. Despite all this, it is pretty accurate, but the trigger bugs me. I'm NOT the only one with an M9 like this, but most don't seem to have this problem on the Steyr Club."

And "Did you try polishing the outside of the striker itself? I found mine had a machining burr. The Steyr, unlike other striker designs, presses the striker hard into the striker channel during the trigger press. Any burr at all will cause the striker to catch and the efforts to go through the roof...especially if you are pressing the trigger very slowly."

Now what do they mean by stacking?