  We point out that in a class of supersymmetric models where R-parity
violation is induced by the spontaneous breaking of local $B-L$ symmetry, the
R-parity violating $W$ decay $W\rightarrow\slep\gamma$ and $Z$ decay
$Z\rightarrow\snu\gamma$, forbidden in the minimal supersymmetric standard
model (MSSM), occur at an enhanced rate compared to other models with R-parity
breaking. We find that the branching fractions for these modes can be of order
$10^{-5}$ .
