True, so far all the observations of Neutron Star are in the range of around 1.4 to 1.9 Solar Mass and radius around 10-12 Kms..........my conclusion is not against this, infact the range I have shown is 1.4 to 2.65 at least for a visible NS. 1. That a visible Neutron Star (outside Event Horizon) can exist only in the range 1.4 to 2.65 Solar Mass. 2. A visible Quark Star (not all Neutrons in the core as Rp>Rn) can exist only in the range 2.65 to 3.24 Solar Mass. 3. But there is a possibility...of an object.....which can exist larger than 3.24 Solar Mass and inside EH (Rs > Rp) ...and I have called that as Black Neutron Star (BNS).