Vltor Weapon Systems CASV-S Handguard Preview
The new CASV-S from Vltor Weapons Systems is a bi-level midlength version of the CASV-M with a few differences. Like the CASV-M, the CASV-S is designed to be used with a midlength gas system with any front sight/gas block, or with a carbine (or shorter) gas system with low profile gas block underneath. The main difference between the CASV-S and the EL and M versions is that it has a bi-level top rail.