Since Sturms are the only unit, apart from volks, that have voice lines for shrecks I support the idea of giving shrecks to Sturms (120 for 2 shrecks).
Alternatively, shrecks could stay on Volks as a snare.
>90 ammo to unlock the ability to fire shrecks
>same cooldown/range as PzFausts
>same pen/damage as normal shrecks