In my experience, most of the M4 LE models that Benelli sells come with the +2 extension on the 5 round tube instead of the full length 7round single piece tube. I think the only ones that come from the factory with the 7 round single piece tube are the real M1014s for the US military (not to be confused with the civilian M1014 Commemorative with the engraved US flag, which has the normal 5 round tube with the ribbed dummy extension.
I picked up a brand new LE model M4 at a gun show with the functioning collapsing stock and the 5+2 mag. Regardless of whether dealers are not supposed to sell the LE models to civilians, the reality is that many do. 922r isn’t a concern for the buyer as the assembly was done at the factory, and it’s an assembly offense, not a possession offense.