TW, we must be twins separated at birth. I also have an RBL which I like a lot, and own two M31's. The 12 was my dad's first gun (30", matt rib, full choke) which I later cut to 27" and added Brileys. The other is a 31L 20 gauge which was 30" full. I cut it down a bit, leaving about .05" choke. It's now my wet weather Grouse gun when I don't want the RBL or M21 to get soaked