Unless you are dead set on the M2, look at the Franchi Affinity. Inertia driven and light weight. Already drilled and tapped, and has a lot f owners on here. Less money than the Benelli (shop around for the best price). I have one in the cobalt cerakote with a 26" barrel. Put me a .562 Sumtoy in it, and it's gonna be deadly with #9 TSS. I also have an 870 compact with the 20" barrel, and the Affinity feels way lighter in the hand.....