The original CASV was developed from input received ffrom the U.S. Military. The new “Step Level” design of the CASV-S was developed primarily for end users that are required to use the EOTech Holographic Gunsight.

The CASV-S offers a forward rail that is stepped down to match the height of the standard flat top A4/M4 upper receiver rail, allowing the use of optical sighting devices that would normally sit too high for a usable co-witness with the weapon’s iron sights. The CASV-S also allows for the use of a standard rail mounted front sight.

The CASV-S is designed for a Midlength gas system and will work in any application where the weapon uses a MilSpec flat top receiver and 9” handguard system. The CASV-S will work with a Carbine (7”) gas system, but will require the use of our low profile gas block. This system is also available for carbine length gas systems and a conventional front sight, as the CASV-ELS. The CASV-S and ELS are available in black only. All CASV Systems ship with all necessary mounting hardware and rail kits.