Originally Posted By: HeadHunter204Its my understanding you have to swap the whole triggger an safety assemembly when replacing them. Due to the all polymer lower, supposedly the safety has to be switched to metal if your doing that with a trigger as well.
Not true. The PC safety will work just fine.
I've installed four RRA 2 stage NM triggers in 4 different PC lowers. Three of the four installed and functioned just as they were supposed to.
I determined one of the lowers was just a few thousandths narrower in the area where the trigger was held in place by the pin. That trigger was somewhat bound (being squeezed) by the lower. Not much, but enough it was noticeable when slipping it in.
Venatic, that particular trigger did exactly as you are describing.
For an effective fix I narrowed the overall width of the trigger by filing approx .002 off each side, making it a total of .004" narrower than original. Worked just fine after I did that.
Take the entire trigger assembly back out. Take the spring off your trigger and install it. You should be able to tell if it's able to move freely or is being *squeezed* by the lower.
May not be your problem. But it might be.
