Perhaps it would help others. Experience (based on recommendation from Vortex
) showed that:
<ul style="list-style-type: disc">[*]Butler Creek cap <span style="font-weight: bold">#43</span> fits 50mm objective - works for Vortex Razor HD as well (tested with sunshade). I conjecture it should fit PST as well (same objective size).[*]Butler Creek cap <span style="font-weight: bold">#20</span> fits Vortex Razor HD ocular (tested).[/list]

<ul style="list-style-type: disc">[*]Butler Creek cap <span style="font-weight: bold">#43</span> fits 50mm objective - works for Vortex Razor HD as well (tested with sunshade). I conjecture it should fit PST as well (same objective size).[*]Butler Creek cap <span style="font-weight: bold">#20</span> fits Vortex Razor HD ocular (tested).[/list]