Okay, thank you for your time and information by the way. The more I look into these actions, the more variations I see you can actually have.. I understand there are Sako extractors and M16 extractors (and slide extractors which I assume are the same as M16).... what is the difference? All I can find on them is that the M16 is more sought after because of safety concerns... But what makes the M16 so much safer and how does each work?