Glock trigger system chasing grit, grind, and drag

In this educational video I explained how to singularly and comparatively diagnose components of the trigger system in order to find and eliminate grit, grind, and drag, AMENDMENT: I forgot to mention to inspect cruciform kick up/serr to firing pin lug face. That's usually feels like a hitch or click before the break. It will usually appear as a horizontal line cutting into the copper nickel plating of the firing pin lug face.

Originally uploaded on Oct 24, 2019 on YouTube