There's a couple threads on Kel Tec owners forum about your issues. Some pics of diff primers.I'm having the exact opposite problem with one of mine - I can't get my firing pin to hit hard enough.
Weird.
Sorry to bring back an old thread, but I am having this same problem with my SU 16.
I started a thread in the gunsmithing section and I wondered what the outcome was to pix your rifle?
That's laughable!!!
I have called them numerous times, pushed 4 to talk to their rifle people and waited on hold with my Bluetooth headset on for HOURS until you finally hear a click and the call is disconnected.
Not once but several times!
I have also emailed them, which they state they will reply within 2-3 business days. And never gotten a reply.
Easily the worst customer service I have ever seen!



























