If you can find an SX3, I'd take that over the new 4 model. They are tough as nails, reliable, and don't have cheaper plastic internals like the new 4 version.
But shotguns should always be picked on "fit first, then features."
Other than the trigger guard, what is plastic on the SX4 that isnt on the SX3? I had read the gas piston on the 4 now is all metal wheras the 3 had a plastic ring on it. The recoil spring tube is aluminum as is the magazine tube. Trying to find out the real differences in the two as I'm in the market for a new waterfowl gun and I'm strongly considering the 4 due to the new larger controls. I've shot a M1 the last 10 years so going to a gas auto would be a change.
I dont understand the disdain for good polymer parts. I've never seen a broken trigger guard on a Benelli, Glock, XD or any other name brand firearm that uses polymer.
