Ultradyne C4 Flip-Up Front/Rear Sight Set Black. Designed as classic aperture sights the C4 Folding Iron Sights give you excellent accuracy when you are aiming. Plus if you want to attach a red dot sight you can easily fold them down to keep your sight picture clear and increase your target acquisition speed. As aperture sights the C4 system creates a perfectly concentric circle-within-circle sight picture. This is much easier to pickup and use especially for newer shooters as itm akes it very clear where you are aiming. If you're looking for a unique high-quality add on to your AR 15 you can't go wrong with these iron sights. Specifications for Ultradyne C4 Flip-Up Front/Rear Sight Set: Manufacturer: Ultradyne Color: Black Additional Features: 12 MOA Condition: New Sight Mounting Orientation: Top Mounted Sight Position: Front and Rear Gun Make: AR Platform Front Sight Color: Black Rear Sight Color: Black Front Post Shape: Aperture Deployable: Yes Fabric/Material: 4140 CrMo Steel 7075 Aluminum Included Accessories: None Illumination Color: None Hand: Ambidextrous Mount Type: Picatinny Attachment Type: Picatinny Country of Origin: USA Features of Ultradyne C4 FOLDING FRONT AND REAR SIGHT COMBO: Purely concentric outer and inner circles on both front and rear sights for target acquisition Windage-Adjustable for zeroing the front sight 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 Dual aperture sighting system allows the shooter to focus 100percent on the target Rear Sight elevation adjustments that match the ballistic path of standard M193 ammunition Rear sight elevations adjustments in 50 Yard increments out to 600 Yards Interchangeable .070 Aperture and Ghost Ring Spare aperture conveniently stores into windage knob Strategic use of materials to maximize stregnth and weight 416 SS with Nitride Finish / CNC Machined 7075 Aluminum Package Contents: Ultradyne C4 Flip-Up Front/Rear Sight Set Ultradyne UD10480: C4 Flip-Up Front/Rear Sight Set Black