If neither of these have just one offered, polymerpew.com might be my third preference ,but I think they get their's from Deeznutz. The polypew dude has an awesome rep over the fbook SS team marketing modified triggers IIRC, having a FRT (Forced Reset Trigger) the bolt forces the trigger off https://frt-trigger-for-sale12344.blogdon.net/what-does-frt-trigger-mean-50163542