Not sure if this belongs here, or in the gunsmith section. Here's my deal:
I've been struggling with accuracy woes with my Gen4 G19 for a while now. Nothing AWFUL, but I'm measurably and consistently less accurate with my G19 than my Gen4 G26, my Gen4 G23, or my G30S. So, I figured I needed to get back to basics and knuckle down with some dry fire drills. This is what I'm observing:
Whenever I press the trigger on my G19, the front sight "jumps" visibly. Sometimes straight up, sometimes up & left. When I say "jump," I mean it literally looks like a strong vibration snap off true. On occasion, I can see the rear end of the slide rising as I press through the trigger as well - but that's a rare event. The front sight jump, however, happens about 80% of the time. I've tried pressing the trigger straight through with a variety of finger positions, tried "prepping" to the "wall" and pressing through, tried a crush grip, tried a moderate grip, tried one hand strong/weak. I've tried all manners of stock and after market trigger components, including the standard Gen4 trigger & bar, 3rd Gen G17 smooth trigger & bar, dot connector, "-" connector, Ghost Evo ("-" equivalent, allegedly), standard trigger spring, NY1 trigger spring, standard striker spring, heavy duty striker spring. None of these part combinations will make the "jump" go away.
The strangest part is this - it only happens with the G19. All my other Glocks, the front sight is perfectly still if I do my part and don't smash the trigger. I'm a fairly experienced Glock shooter and firearms instructor, have smoked successfully through several "name" programs with other G19s in the past, and have never had the kind of accuracy woes I'm experiencing with this G19.
At this point, I'm open to any thoughts/comments/suggestions...
Thanks in advance!
Regards,
Kevin