Though they are limited to relatively light nuclei due to the complexity of the computations, microscopic approaches—like QMC—are highly accurate where they are applicable. This makes light nuclei valuable for testing models of nuclear structure and electroweak currents. Data on electroweak transitions abound for these systems and this fact—combined with strict selection rules in the limit of vanishing momentum transfer—allows for stringent tests of the vector and axial currents that will be used to analyze new physics searches. In this section, I will discuss several calculations of electroweak observables at low-momentum transfer ( \(q\rightarrow 0\) ) using QMC techniques, focusing on purely axial processes. The calculations discussed include both model validation and the prediction of an experimentally relevant SM quantity for BSM searches.