I've noticed in a ton of photos of AR180B's that the bolt knob has been replaced with an S-shaped crank. As far as I can tell there's a thinner, longer one, from a Vulcan V18 I think, and a shorter, fatter one, from an original AR180 I believe.
Are these common all over the place? Where do people get them? Would they take anything more than n00b gunsmithing to put in instead of that dull-looking knob?
Are these common all over the place? Where do people get them? Would they take anything more than n00b gunsmithing to put in instead of that dull-looking knob?




















































