So I had purchased one of the AKV9's back in June and had finally gotten around to taking it out to the range just last Sunday. I'd checked the gun out before taking it to the range and hadn't noticed any apparent issues. Everything seemed great and I was looking forward to trying it out.
Well, once at the range, about half a dozen rounds into shooting, I pull the trigger and then *click* nothing.
I open up the receiver cover to find the firing pin literally just laying inside the receiver next to the trigger.
WTF!
I then notice the firing pin spring almost jammed behind the trigger spring. I pull the bolt out and see that the firing pin retaining pin is completely missing. Apparently, the firing pin retaining pin had completely fallen out while shooting the gun. I looked around everywhere but was never able to find it.
After searching around online, I was able to find at least one video on youtube of a guy who had encountered the exact same issue. He had reached out to PSA and was told that, yes, they had a batch of PSAKV9's where the firing pin retaining pin hole was not in spec causing the retaining pin to fall out. According to him. they had simply offered to send him a new (in spec) bolt to replace his and that was it, problem solved.
(Link to the other guys video I found on Youtube:)
https://www.youtube.com/watch?v=2O6XJKzDze0