The earlier mdl12 16 ga was on a 20 ga receiver. but it wouldent shoot the 2 3/4 shells without a modification.. later it was made on a slightly bigger receiver.. I had both mdls for a long time. the one on the 20 ga frame was my favorit.. I just sold it a couple years ago.. it had the modifications done by a GS in texas to shoot the 2 3/4 shells..I sold it to someone here on24hr campfire.
