  We investigate the phenomenology of the MSSM extended by a single R-parity
violating coupling at the unification scale. For all R-parity violating
couplings, we discuss the evolution of the particle spectra through the
renormalization group equations and the nature of the lightest supersymmetric
particle (LSP) within the CMSSM, as an example of a specific complete
supersymmetric model. We use the nature of the LSP to classify the possible
signatures. For each possible scenario we present in detail the current LHC
bounds on the supersymmetric particle masses, typically obtained using
simplified models. From this we determine the present coverage of R-parity
violating models at the LHC. We find several gaps, in particular for a
stau-LSP, which is easily obtained in R-parity violating models. Using the
program CheckMATE we recast existing LHC searches to set limits on the
parameters of all R-parity violating CMSSMs. We find that virtually all of them
are either more strongly constrained or similarly constrained in comparison to
the R-parity conserving CMSSM, including the $\bar U\bar D\bar D$ models. For
each R-parity violating CMSSM we then give the explicit lower mass bounds on
all relevant supersymmetric particles.
