thats a good point about the pump handle since i didnt even think about that.
but the real concern of mine is the way the adapter is about 1.5 to 2 inches of smooth bore until it goes to the rifled portion. do you think that it may have a significant negative effects to the rifling of the fsr or that it may cause some damage to the fsr skirts when it transitions between the two?
I bought the hammerhead bangstixx fsr rifled barrel with a spyder fin for the hammer 7 and it is too big to fit into the pump handle. I had to trim down the back half, internal portion of the pump handle with a dremel to make it work.