The spring got me to .went to the range got everything sighted in and trigger adjusted, went home pulled Bcg apart cleaned and lubed everything...and of course did not notice the spring fell on the floor, did not even realize there was a spring. Next morning went to my first 2 gun match and first shot no problem follow up shot nothing next 5 nothing. Thinking maybe my trigger might have been the issue so I hurry and take everything apart in between stages , pull the Bcg thinking maybe the firing pin broke .. nope. So I decided just to shot the match with my pistol and take the penalties.