In my military/tatical SG collection I have a number that accept bayonets, and of course as a collector I am not happy till I have the proper bayonet/scabbard etc for that particular weapon. The first bayonet/SG combos were for the Moros after the Spanish American war. Logically enough they were for the Winchester 1897, and used the Springfield long bayonet, which enabled one to shish ka bob someone about 2 feet thick. Later hey were shortened to a more manageble length. In WWI the "trench gun" meant a SG wth a handguard and a bayonet attachment point, while a "riot gun" came to mean simply a SG with a shorter barrel than standard, usually 20" or so.
We want to remember that bayonet use was/is always combined with the use of the weapon as a close quarters blunt weapon as in vertical/horizontal butt strokes as well as any other way to hurt/kill your enemy with the weapon. This worked well with the original steel/wood SG setups, but works less well with modern pistol grip stocks and fragile adjustable stocks as in the Benelli. Currently the only available SG with a bayonet attachment is the Mossberg 590A1, which makes a fairly good close quarters non firing weapon(most of the time the enemy-except for vegetables-is not shot off the muzzel).
I wonder why the guy in the clip did not at least deliver one buttstroke to the offending cabbage.