Ares M4 FF-L Stock issues
 

Hello all, Ive been trying to locate a compatible buffer tube for my rifle and having a bugger of time doing so, and from what ive read on other forums it needs a Commercial-Spec Buffer tube that screws onto the reciever, rather than bolt onto the spring guide. Can someone please confirm this? and could someone please point me to one that would work that is available in Canada?