The 45 degree sights, 45 degree flip up sights is made of high quality aluminum alloy processing, non-rust black anodized finish, excellent performance, light and durable 45 degree offset flip up sight, 45 degree flip-up front and rear sights with red and green dots compatible with most Picatinny rail and Weaver rails Both left-handers and right-handers could use the 45 degree sights freely and easily. 45 Degree Sights with Low-Profile Design makes transitioning from optical to iron sights simply