I used to know, but have forgotten, when one removes the bolt and the rotating bolt head snaps back into the body and you wish to reinsert the bolt into the receiver, how do you get the bolt head to stay in the out position? Some will stay out when removed but many snap back into the bolt body and you can pull and rotate it into the insert position, but the instant you let go of the head it snaps back into the body again. I know there's a trick to it, but haven't handled one for years until today and am having frustrating results!
DG