I've had a S&W 20ga model 1000 skeet for years--I believe the 1020 is now the designator for the model 1000 in 20ga. If it hasn't changed any, it is a Japanese made gas operated semi-auto--similar to the Rem 1100 except no O rings. The reciever was alloy except on the trap/skeet models where it was steel. Mine has functioned well over the years. I know they discountinued these in the late 90s, but I guess brought them back for awhile. It is a high quality and highly reliable gun.