Yeah it was a bummer. First it started stove-piping the spent cases and then it just stopped altogether. I am not sure how the two relate but it's never had any issues before whatsoever. At first I didn't even notice the void until Andy looked at it and pointed it out. I have some pics, not the best because I took them with my phone. I didn't post them here originally because they were not the topic of this thread but here they are: I haven't called Armalite yet even but back onto the topic of the ACSS reticle... I was definitely liking the scope while the rifle was working. Hopefully I'll get to use it for real some time soon.