Jayne Cobb "Boo" prop parts

Parts to convert a Denix replica Lemat revolver into Jayne Cobb's "Boo"
The sleeve part will snap onto the lower barrel. The cap part will need to be ground down to fit under the barrel and the bullet pusher bar clip. I do not have a bottom guard piece printable; I made that out of sculpey.
Source replica: http://tinyurl.com/nkezkzp