My 2 cents is the 1620 is the case colored receiver with ejectors. The 1620E is the gun with game scene engraving and coin finished receiver. The 1620 EL is the same as the 1620E, but has the upgraded wood. I could be wrong, but I think thats what it is. PS. The 1620SL is the sidelock version. None of the above designations have anything to do with buttstock types, single versus double triggers etc.

foxes rule