I saw a take down long bow the other night that the male end looked round with threads with 2(?) flat sides, The female end down deep looked like a square hole. There were threads in this end also. I believe you inserted the top into the bottom & give it a 1/4 twist and it had a positive lock stop. Does anyone know who makes this, what it's name is and where I could get one? Other than that, what might be a suggestion for the best connecting system? Thanks a bunch.javascript:void(0)