There are a lot of posts on the internet about the safety having an issue with not fully flipping to the safe position with fears and concerns whether or not the rifle is on safe or if this is a defect (post recall). This topic has been a deciding factor for a lot of folks and rightly so, unfortunately for this rifle. In this article we will share some information on this topic and ease the uncertainty surrounding this rifle definitively.
"The problem":
While on a closed bolt in the ready to fire condition, if the safety is switched back to safe there is a noticeable point of resistance short of the complete rotation to the safe position. It is certain to say almost everyone finds this unusual behavior for good reason, however in this particular case there is no need for concern.
Here is why:
At a glance the safety selector looks very similar to an ArmaLite-15 selector switch but this is where the similarities stop. Deeper inspection has revealed that there are multiple stages. The first is a two in one (ref. 2), as the drum is rotated, it begins to block the path of the primary sear, at the same time the selector drum has a pocket that captures the actuator sear from downward travel mechanically locking the trigger input. At the 3rd stage (ref. 3) this is where we have all noticed the selector gets stuck somewhere around the 70 degree angle. What you are feeling is the selector drum rolling into the primary sear compressing the firing pin spring (carefully watch the back of the bolt when closed and engage the safety) while pushing the primary sear away from the actuating sear. Both sears are now captured and mechanically locked by the selector drum. Oh! I almost forgot, there is a FOURTH safety feature, a striker arresting arm that when the trigger is not being depressed will catch the firing pin carriage if by some hell the primary sear failed.
So to sum it up in the words of Sig (through the gape vine) "its fine", It is "safe" at the 70 degree area where it gets stuck, however this is not a recommendation to leave it at that point.
Disclaimer: We cannot claim that this is truly and fully the intentions of the design by the engineers at Sig. The information described here is the sum of reverse engineering the mechanical interactions in this assembly.