Originally Posted By: oldmanriver
Seems like a really tall rib,(made from two differant steels in the cross section view ?).


oldmanriver:

Double barrel shotguns generally have soldered upper and lower ribs between the barrels, the contrast you are seeing is the solder versus the steel......

The rib follows the same designed contour as it leaves the receiver.....they are raised and not swamped ribs on these guns.....hope this helps.......




Best,

Doug