The CAS-FS Front Flip-Up Sight is the perfect addition to the CASV-M handguard. This front sight installs on the forward part of the handguard (in place of the front filler rail). This sight allows proper sight height when used in conjunction with a rear sight placed on your upper receiver behind the CASV-M's piggyback rail. When folded down, this sight sits no higher than the CASV-M Picatinny rail.

We recommend using rear BUIS with a forward-biased mounting screw in conjunction with the CAS-FS sight.

• Lightweight
• Easy Installation
• Same height as the standard “F” marked front sight base
• Uses standard M16A2/M4 four position front sight pin