Ultradyne C4 Dynamount Flip-Up Front Sight 223/5.56 Black. It starts with a the superior always centered aperture that mounts to the barrel to ensure accuracy. Windage and elevation adjustments are also available along with the ability to set at 90 or 45 degrees. Using the C4 Dynamount Front Sight in conjunction with the C4 Rear Sight creates a perfectly concentric sight picture that allows the shooter to see the target enables faster sight acquisition reduces the effect of parallax and gives the ability to consistently shoot accurately out to 600 yards and beyond. If you want the ultimate front sight this is the one for you Specifications for Ultradyne C4 Flip-Up .223/5.56 Dynamount Front Sight: Manufacturer: Ultradyne Color: Black Additional Features: 12 MOA Sight Mounting Orientation: Top Mounted Sight Position: Front Gun Model: AR-15 Gun Make: AR Platform Front Sight Color: Black Rear Sight Color: Front Sight Only Front Post Shape: Aperture Deployable: Yes Fabric/Material: 7075 Aluminum 4140 CrMo Steel Blade Height: 1.21 in Included Accessories: 12 MOA Dynalign Front Post Illumination Color: None Hand: Ambidextrous Country of Origin: USA Features of Ultradyne C4 DYNAMOUNT FRONT SIGHT: Rock Solid Barrel Mount Purely concentric sight picture with an always centered inner aperture and outer circle for easy alignment Apertue sights gives a shooter the ABILITY to focus 100percent on the target and uses the brains natural inclination to center the target which is done effortlessly Windage-Adjustable for zeroing (1/2 MOA/Click) which guarantees that the rear sight windage is perfectly centered when at zero for maximum in windage adjustment in either direction along with easy return to zero Tool-less elevation adjustment that is always perfectly concentric with the outer circle Indexable to 45 Degrees for Offset Use Includes 12 MOA Dynalign Aperture Front Post Strategic use of materials to maximize stregnth and minimize weight 4140CrMo with Nitride Finish / CNC Machined 7075 Aluminum Package Contents: Ultradyne C4 Flip-Up .223/5.56 Dynamount Front Sight What firearm models does the manufacturer say Ultradyne C4 Flip-Up .223/5.56 Dynamount Front Sight is compatible with? The manufacturer says that Ultradyne C4 Flip-Up .223/5.56 Dynamount Front Sight is compatible with AR-15Ultradyne UD10520: C4 Flip-Up Front Sight .223/5.56 Dynamount Black