\documentclass{article} \usepackage[version=3]{acro} \RenewAcroCommand\ac{mo}{\UseAcroTemplate{first}{#1}\IfNoValueF{#2}{#2}} \DeclareAcronym{uc}{ short = UC , long = Universal Composability , cite = xxx } \begin{document} We use the \ac{uc}[ model] for\dots \end{document}