  We discuss the minimal supersymmetric $U(1)_{B-L}\times U(1)_R$ extension of
the standard model. Gauge couplings unify as in the MSSM, even if the scale of
$U(1)_{B-L}\times U(1)_R$ breaking is as low as order TeV and the model can be
embedded into an SO(10) grand unified theory. The phenomenology of the model
differs in some important aspects from the MSSM, leading potentially to rich
phenomenology at the LHC. It predicts more light Higgs states and the mostly
left CP-even Higgs has a mass reaching easily 125 GeV, with no constraints on
the SUSY spectrum. Right sneutrinos can be the lightest supersymmetric
particle, changing all dark matter constraints on SUSY parameter space. The
model has seven neutralinos and squark/gluino decay chains involve more
complicated cascades than in the MSSM. We also discuss briefly low-energy and
accelerator constraints on the model, where the most important limits come from
recent $Z'$ searches at the LHC and upper limits on lepton flavour violation.
