This Iver Johnson manufactured receiver is for the Knox - All Hammer Double 12 gauge shotgun and is in very good condition exhibiting a mixture of original blue finish blending with a brown patina and having a few specks of light surface rust. This is the only part on the Hammer Double shotgun that is tracked as a firearm therefore it will need to be transferred through a dealer. Receivers do not qualify as a C&R based on BATFE's guide lines. (file photos)

Note: Iver Johnson Hammer Double shotguns with the following year/serial number have been observed with this part: 233506