On any caliber Since every Aimpoint sight is made for use in the real world, they can be mounted on virtually any type of firearm in any caliber that you can imagine.No dot centering required With an Aimpoint sight, you never have to worry about centering the dot inside the sight. Once you see the dot on your target, you’re ready to shoot. Other red dot sights with substantial parallax can cause you to miss by as much as 30 cm (12 inches) at a distance of only 45 meters (50 yards). That can mean the difference between a clean kill and irresponsibly wounding an animal or missing it completely.The original Manufactured since 1975, more than one and a half million Aimpoint sights have been sold. You can trust an Aimpoint red dot sight to perform when you need it to.On any firearm If you are looking for a rifle sight or handgun sight that will hold up and perform as well as your favorite hunting firearm, Aimpoint has the sight for you.For more information on Aimpoint® please visit our official website at us.aimpoint.com.