  We study the full moduli space of vacua of 6d worldvolume SCFTs on M5 branes
probing an $A$-type singularity, focusing on the geometric incarnation of the
discrete gauging mechanism which acts as a discrete quotient on the Higgs
branch fibered over the tensor branch. We combine insights from brane
constructions and magnetic quiver techniques, in which discrete gauging is
implemented through the concept of decoration introduced in [arXiv:2202.01218].
We discover and characterize new transverse slices between phases of 6d SCFTs,
identifying some of them with a family of isolated symplectic singularities
recently discovered in [arXiv:2112.15494], and conjecturing the existence of
two new isolated symplectic singularities.
