The cylinder appears to be factory .45lc, the chambers are counter-sunk, (rebated?). Its been nickel plated, and some of its flaked off around the cylinder, since its not a factory original, I wont worry about it losing value if i have it re-finished.
More than one thug has told me that the only thing he really fears is an armed victim. Not police, not jail, not a jury. An everyday person with the means and ability to NOT be a victim.................