If you like to deprime and tumble clean your cases before sizing, order this optional depriming kit. It is simple to install, simply replace the priming insert (small or large) with the DEPRIME insert, replace the primer push rod with the decapper and youre ready to deprime. No shell holders required, and cases sorter than 2 1/2 can be fed automatically with the optional 90242 Universal case feed magazine. It makes your ACP press the fastest deprimer made.