Infantry and Guards Brigades have a sniper unit each.
Ever other type of sniper, if you need to know you will know, if
you don't need to know, you'll not read it on this forum.
For rifle types, Steyr SSG and PGM mini-Hecate, and others...if you
need to know.
Long ago, when all infantry sections were using only M-16, each
section had 1 guy designated as marksman, equipped with a scope for
his M-16, but this role has been redundant, since now every SAR-21
is scoped and more accurate than a M-16 with sharpshooter
scope.
Supposedly the SAR-21 had an option to refit with 3x scope for the
section marksman, but I don't think its implemented yet for SAF
Infantry.