45 Degree angled front & rear sight won't hinder your optics Slim and low profile design takes little rail space 0.49 MOA on A4 type rifles 0.65 MOA/M4 Carbine Compatible with 20mm picatinny rails Easy flip-up ball bearing pivot sights Firmly locks into position as soon as it is raised Black anodized aluminum body construction Standard A3 style front post Assist in quick target acquisition close to mid-range Lightweight ghost ring aperture sight is compatible with full size and carbine rifles In the Box 1X Front Sight 1X Rear Sight Specifications: Brand AIM Sports Build Aluminum Function Front and Rear Sights Weight 0.09 oz Compatibility 20mm Picatinny Finish Anodized Color Black California Proposition 65 Warning: Cancer and Reproductive Harm - www.P65Warnings.ca.gov