Range trip today, went nearly 50 rounds of mostly wwb without issue, then the dreaded FTEx with last couple mags. Switched over and ran a mag of 147 goldots without issue then I went home and re-cleaned and lubed, brought Wally Feds and Rem UMC's with me. second mag of WallyFed, FTX, then ran 3 clips of Rem UMC no issues. Then another mag of Wally fed another FTX.
So having been down this road before, I had an extra extractor spring. So I installed at the range, checking fireing pin rentention on the 2x stacked extractor springs. Everything ran 100% right up till the franken bolt loosened just enough to shoot the firing pin out the back.
I called KT theyre getting me one in the mail today, so I should be back in business soon.
Accuracy was real good,and it did shoot almost 50 flawless Rem UMC all total plus a mag full of 147's