I find myself in the odd position of building a dummy but instead of needing the receiver to be a dummy I need the barrel and bolt to be non-functional. The reason is that the build will be on a live 1921 Colt receiver. The gun in question is a Form 10 gun and has been stripped. The Department that owns would like to put it on display as it has a quite interesting history behind it. But to avoid any risk that may arise if the gun is stolen it has to be non-functional, which means a plugged barrel and a dummy bolt but one that actuates. I also wouldn't mind getting ahold of a dummy L drum, if there is such a thing. More likely I will be a WH drum for the display. Any thoughts on sources? I figure I will use a standard 1928 lower and wood set to complete the dummy.