  We study the moduli space of A/2 half-twisted gauged linear sigma models for
NEF Fano toric varieties. Focusing on toric deformations of the tangent bundle,
we describe the vacuum structure of many (0,2) theories, in particular
identifying loci in parameter space with spontaneous supersymmetry breaking or
divergent ground ring correlators. We find that the parameter space of such an
A/2 theory and its ground ring is in general a moduli stack, and we show in
examples that with suitable stability conditions it is possible to obtain a
simple compactification of the moduli space of smooth A/2 theories.
