I've got an early model MK1 Detonics .45 #C221XX – It has been mildly customized including being beadblasted, Armaloyed, with two sets of new grips (Pachmayr & black wood grips, SS hex head grip screws and mag catch, SS Brown flat MS housing checkered 30LPI. Have over $800 in it. Asking $650. Unfired since refinished....excellent condition, looks like new...photos available