What do you mean? If your saying you can't take off the parts from the outer barrel just remove the triangle sight and slide them off the front like a one piece. You still can take the barrel on and off from the receiver.Your only Epoxing the outer barrel joints and basically welding it together with epoxy or if you want JB weld.I switch my gun back and forth from m733 to m4 ris all the time when I want a change.
Anyhow sorry to jack your thread.
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