The Midwest Industries MICBUIS Combat Fixed Rear Sight is the perfect addition to any AR 15, M4, or M16. These AR 15 Parts are fixed, so they stick securely to your rail giving you a locked view of any targets, which is particularly useful if you don't plan to use a red dot sight or rifle scope. Machined from T6 6061 Aluminum and featuring a black hardcoat anodized finish, this rear AR 15 sight is sleek, durable, and lightweight. Plus, it's Mil-Spec height, so you don't have to worry about it interfering with your other attachments. Specifications for Midwest Industries MICBUS Top Mounted Fixed Iron Sight: Manufacturer: Midwest Industries Color: Black Condition: New Sight Mounting Orientation: Top Mounted Sight Position: Rear Gun Model: M16, M4, AR-15 Gun Make: AR Platform Rear Sight Color: Black Deployable: No Fabric/Material: Billet 6061-T6 Aluminum Gun Type: Rifle Mount Type: Picatinny Finish: Hardcoat Anodized Country of Origin: USA Attachment Type: Picatinny Midwest Industries MICBUIS Combat Fixed Rear Sight AR-15, M4, M16 Black What firearm models does the manufacturer say Midwest Industries MICBUS Top Mounted Fixed Iron Sight is compatible with? The manufacturer suggests that Midwest Industries MICBUS Top Mounted Fixed Iron Sight is compatible with AR-15, M4, M16