Dumb question but kinda bugging me. I used to hear a ding noise when dry firing my M1a after the trigger is pulled, like a resonating echo I guess is the best description. Anyways, now I dont hear that noise with that rifle, but I do hear it with my brand new standard M1A. Does this mean the hammer is slower or there could be a potential problem? I just dont get why it doesnt make the noise anymore.