I have a couple of the 20ga RBLs I use for hunting and am real happy with them. I would have gone for a 16ga from CSMC, but the weight scared me off.

If CSMC has put 12ga barrels on a 16ga frame (as mentioned by Vol423), anyone have any experience with CSMC putting 16ga barrels on a 20ga frame? I don't know if CSMC would do such a thing, but if they did that could be a real nice game gun.