Dr Gaddy's D4 sample
Four Iron Crolle usually stamped D4 on the barrel flats, and used on Grade 2/GH through some Grade 6/AH guns. 'Black and White' top, 'Browned' bottom.
Four Iron Crolle usually stamped D4 on the barrel flats, and used on Grade 2/GH through some Grade 6/AH guns. 'Black and White' top, 'Browned' bottom.
