Bayonets look cool on shotguns,but....
Check your Zero.
Pitchfork something like a hay bale.
You have had bayonet training,right?
The barrel metal on shotguns is too thin to withstand the forces generated by using a bayonet as it is intended to be used. Same thing happened in Nam with the early M-16s with much thicker barrel walls.
If it's strictly for looks, have at it. But utility's very limited....