This factory manufactured checkered walnut fore-end assembly - fourth variation is for the Iver Johnson Sporting Goods Co. Knox-All double shotgun in 12 gauge and is in very good condition with light dings and handling marks. The fourth variation measures 7 7/8" long, is very similar in size to CFA4808 (third variation) with the main difference being the front end on the 4th variation is slightly thinner in size. (file photo)

Note: Iver Johnson shotguns with the following serial numbers have been observed with this part: