In regards to some of the accessories people were talking about/interested in.
Of what I tested so far:
Mesa side saddle & rail - Fits, the holes in the receiver line up perfectly and it goes on no problem. This also means other accessories that utilize the top of the receiver like the Scalarworks RMR mount should fit.
Replacement handguards - Fits, there is a couple designed for benelli m4 so if one fits the rest probably will.
Benelli/Beretta chokes - Fits. It came with 5 regular chokes & tool + a ported breaching style choke (looks like the carlsons one)
Benelli U.S.A Bolt Handle (Mfr Part: 70041) - Fits but doesn't stay in the action, just hops right back out and wouldn't lock in place. Apparently bolt handles for the Benelli m4 are a bit finicky. Some are designed for multiple models (m1,m2,m4) but have issues with the M4 since it has a different mechanism to hold the bolt handle in place, while other companies make specific handles just for the m4. So some different handles may work, but the one I tried didn't.
Also pleasantly surprised how light it is, very nice weight for a shotgun. Haven't had a chance to shoot it yet but it cycles dummy rounds very nicely.
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