Oh, they look nice!
But how about this?
• Very heavy.
• Slow cycling.
• Slow to reload (no guide for magazines)
• Very narrow mission (against soft targets from barricade)
• Doesn't defeat Kevlar.
Better off with Benelli M2
• no NFA paperwork
• can be configured for field
• can be configured for defense (extended magazine, bolt handle, and bolt release)
• can be configured for quad loading
• can be configured for ghost loading
• fastest cycling because of inertial action
• quick change barrels
• forend weapon light available
• still doesn't defeat Kevlar :-(