In the m733 video on mechbox.com he didn't seem to even touch the fire selector.
http://www.mechbox.com/m4m16/m733-disassembly.html
I'm meaning on how to reattach the fire selector? The one that you flip to change from safe to semi or to full auto.
Maybe I should post some pictures...
1. In the first picture is the piece rounded with a red circle, I'm trying to figure out which way this goes in.
2. The picture of the metal body.
3. That way I'm trying to attach it, but when I attach it that way, it's too stiff and the fire selector wont move. But when I loosen the screw, the fire selector moves but the metal piece doesn't.