Mine has a C after the serial no. I don't really have any other info but I do know the earlier models had some issues, so far this one has worked just fine, I have put one box of Monarch fmj w/metal case and about 25 or 30 rds of Rem. UMC fmj w/brass case. I haven't tried and hollow points in yet.
My readings of history convinces me that most bad government results from to much government.....Thomas Jefferson
Being Ignorant is not so much a shame as being unwilling to learn............Benjamin Franklin
If Barack Obama is the answer, the how damn stupid was the question.