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We propose an economic extension of minimal supersymmetric standard modelwith a SU(2) singlet and Y=0 triplet, which can explain (i) the 125 GeV Higgsboson without fine tuning, (ii) the 130 GeV $\gamma$-ray line seen atFermi-LAT, (as well as a second photon line at 114 GeV)(iii) an enhanced Higgsdi-photon decay rate seen by ATLAS, while being consistent with dark matterrelic density and recent XENON 100 exclusion limits on spin-independent directdetection cross-section. We obtain the required cross-section of$10^{-27}cm^3s^{-1}$ for the 130 GeV $\gamma$-ray flux through the resonantannihilation of dark matter via pseudoscalar triplet Higgs of mass $\sim$260GeV. The dark matter is predominantly bino-higgsino which has large couplingswith photons (through higgsino) and gives correct relic density (through bino).We get the enhanced Higgs diphoton decay rate, $R_{\gamma \gamma}\simeq 1.24$dominantly contributed by the light chargino-loops, which can account for thereported excess seen in the $h\rightarrow \gamma \gamma$ channel by ATLAS.

130 GeV gamma ray line and enhanced Higgs di-photon rate from Triplet-Singlet extended MSSM