When the Ithaca 37 UL came out in 1978 it was offered in 20 ga. with special fixed choked barrels 25" long in IC, Mod, and Full. And a deerslayer model with 20" bbl. They all had pistol grips and Sid Bell caps with a grouse or pheasant on the 25" guns and a deer head on the Deerslayer.
Just dropped the UL deerslayer off at the post office this morning it is going to someone in Ohio. I just never felt the need for the pain to shoot a slug out of a 5 lb. gun, 20 ga. or not. And I buy them to shoot, which is why I eventually decided to sell it to someone that may. It was an early first year gun with aluminum trigger housing. It didn't take Ithaca long to figure out aluminum didn't wear well so switched back to steel trigger housings after the first year.
Later 37 Ultralights were offered in other gauges and some with English straight grip stocks including the 20 ga. After they moved to King Ferry some of the barrels on the 20 ga. Ultralights were 26" and had choke tubes.
King Ferry made a limited run of 500 Ultralight English Deluxe in 16 ga. Mine was made in 1999 with a 26" choke tubed bbl.
Bought it new in the box, and only has 2 shots fired through it. Seems to work for me though.
Upper Sandusky also sold a few 37 Ultralights, but not many. I picked up a 12 ga. UL made there with the new style Ohio wood on it and 26" bbl. Must be the only section of land in SD without a fence post to set it on, so not a great picture of it.
The 12 ga. and 16 ga. Ultralights both weigh in at 6 lbs. And my 1949 16 ga. field with 26" plain bbl. does too.
You start adding a rib and thicker steel for choke tubes the weight goes up in a hurry.