I have a Benelli M4 I changed it from Duty configuration and put a traditional hunting stock on it with the 3 shot tube, and left my quck adjust 2 point sling on it. Then went to Arizona for opening day of Quail season the first of October.
On opening morning having never shot at a real bird with the M4, I was lucky enough to be in the birds. I was able to limit out that day. I have hunted with both a pump 12 and a beautiful Beretta Silver Pigion 12 O/U as well. I have take may birds in the past with those guns. BUT, I have to say taking the all-biet heavy M4 out there and humping up the hills for those little qauil was a great time. Ihave convinced my hunting budy to get one as well. We both love the light kick even after a full day of blasting.
So, My vote is take a M4 out and have fun, it is what you bought if for right!