Guys,
Maybe someone else has crossed this bridge and found a solution. If so, please chime in.
Problem:
Factory Bushmaster carbon 15 pistols do not use a traditional castle nut to capture the buffer tube. In fact, the buffer tube is plastic and simply threads into the rear of the receiver which negates the possibility of using a single point receiver end plate. To further complicate the situation, a bolt on solution ( such as the CAR EZ mount ) isn't suitable either since it is designed to squeeze the buffer tube to hold its position. I fear using a clamp on in this situation could damage the plastic buffer tube and / or cause operational failure.
The only solution I have seen is a pistol buffer tube with a custom tailcap outfitted with a swivel. However, I am not sure whether or not this is doable with the Bushmaster pistol.
Thoughts anyone?