Expensive, but worth it. - KNS Precision AR-15/M16/AR10 Gen ST Non-Rotate Trigger/Hammer Pins

I was running with no anti-walk installed and they luckily fell out in the house when I was wiping down. That means, they were almost all the way out while I shot my last few mags. I got lucky. Now, with these KNS installed? ZERO issues. They come with loctite already installed on screws,so there's no worry of them coming loose. Tighten lightly until they stop, then a quarter turn at MOST. If you strip them out, you're out of luck. I suppose you could always go to a larger screw, but take your time and you'll be fine.