Finally home, opened up the Sharps sent by Charlie Hahn. The following pictures show the details of the modification. The breech block was made solid (gas check plate is pinned in place) and the flash channel was simplified. The chamber sleeve was remanufactured in two pieces, with a captured o-ring used to make a positive seal with the breech block. He also made a taller brass front sight. Mr. Hahn provided info about care and feeding, as well as instructions for making the cardboard cartridges. This mild weather returns, and I should be able to post a range report. Still waiting on the Smith carbine sent for reline, should be any day.