This was sent from KelTec for review. SO far it's not looking good. I'm getting multiple failures to feed/cycle. I need to find some other examples, but the relationship of the case head/primer in the bolt is offset for some reason (maybe extractor is defective, as it has a hard time grabbing spent cases). I like that this is 1:7 so we can stabilize M855A1 and longer bullets, but we're seeing the same problem the P50, exhibits, over pressure signs on the brass. Attached is some SS197SR recovered brass, as well as factory SS198LF, and some handloads with AE TMJ brass. It's almost as if they designed their 5.7 guns to only run the weak SS197SR :\