Ultralight!!!! MADE of Polyphenylene sulfide is a semicrystalline material. Offers excellent balance of properties, durable and light After many tests and strength tests, it can be used for various gun products of high quality with convenient use and affordable price Good 45 DEGREE OFFSET PUSH BUTTON FLIPS UP WITH EASE - Sights are offset 45 degree to allow you to slightly rotate your rifle to witness target through them and engage. A simple press of the button and your iron sights will pop up quickly.