"Light weight hammer springs often used to reduce trigger pull won't reliably ignite 22 LR. "
I guess I'm the exception to this rule. It was recomended to me not to use the light weight hammer spring, but I had to try and after being given one for free it made the decision simple. I'm 100% with primer strikes(and can cycle subsonics) and around 98-99% without failures of any kind. They didn't start till about 500 rounds deep.
This is running a Spikes tactical dedicated upper with nickle plated bolt and Green Mountain match barrel(16" hbar with M203 cut). Having a unnothced hammer helped big time as I was originally using this upper on a Bushmaster lower and had more failures.
Quick Pic.
This thing is too much fun.