If neither of these have 1 offered, polymerpew.com might be my third preference ,but I believe they get their's from Deeznutz. The polypew dude has a fantastic rep on the fbook SS group promoting modified triggers IIRC, which has a FRT (Forced Reset Trigger) the bolt forces the trigger off https://keegankaocr.blogproducer.com/41145254/how-much-you-need-to-expect-you-ll-pay-for-a-good-forced-reset-triggers