I ran across the photo of a couple of SEALs in Vietnam. A couple of interesting this about it. One is the guy on the left is wearing the seal float coat. Which I may get into another time. The real thing that caught my eye is the seal with the shotgun, The shotgun has the “duck bill spreader” attached to the muzzle. The device made the back shot disperse in a more horizontal spread instead of cone shaped. Reportedly the shotgun with duck bill combined with #4 buck was extremely effective.