glock 17 stock or buffertube or arm brace adapter

This should fit on a full framed glock 17 or KSC glock 17 for airsoft. currently it is just a frame without a buffer tube. my intent on this is to make a buffer tube adapter so it will be a non-NFA item. buffer tubes dont make pistols SBR's at least in the USA. The 'Spike' should fit into a glock fine, and the upper brace should snap fit onto the beaver tail. fit a pin on the grip as with all glock stocks should have.

Added a rail to the rear so a tube or accessories can slide on.