320 m17 thumb safety trigger work?

[jcc7x7]

So I bought an m17 thumb safety to carry appendix, wasn't comfortable carrying aiwb w/o a safety. 

 

What trigger system gets a thumb safety fcu in the 31/2 -4 lbs pull?

 

Thanks

[Heliarclee]

14 hours ago, jcc7x7 said:

So I bought an m17 thumb safety to carry appendix, wasn't comfortable carrying aiwb w/o a safety. 

 

What trigger system gets a thumb safety fcu in the 31/2 -4 lbs pull?

 

Thanks

My non safety M17 is at 3.5 lbs with the grayguns curved trigger competition kit in it with the factory trigger return spring.  I would imagine the thumb safety version would end up similar.