Knight's Armament Top Mounted Deployable Front Sight Black. When stowed in the folded position the M4s sight base extends back to envelope the front sight leaf on the right and left side helping to protect it from damage. Specifications for Knight's Armament Top Mounted Deployable Iron Sight: Manufacturer: Knight's Armament Color: Black Sight Mounting Orientation: Top Mounted Sight Position: Front Gun Model: M4 Gun Make: AR Platform Deployable: Yes Illumination Type: Non-Illuminated Gun Type: Rifle Illumination Color: None Hand: Ambidextrous Mount Type: Picatinny Country of Origin: USA Attachment Type: Picatinny Package Contents: Knight's Armament Folding M4 Front Sight What firearm models does the manufacturer say Knight's Armament Top Mounted Deployable Iron Sight is compatible with? The manufacturer suggests that Knight's Armament Top Mounted Deployable Iron Sight is compatible with M4Knight's Armament 99051-BLK: Top Mounted Deployable Front Sight Black