When selecting a mounting solution for your optics, strength and weight are two important considerations. The greater the overall weight of your complete optics system, the greater inertia (the tendency of a body to resist acceleration) it will have. When a gun is fired it, recoils with instant acceleration. A heavy optics system mounted above the bore axis will resist the sudden rearward movement. A lightweight, strong mount is the best way to combat unwanted sight movement during recoil.
Barrett ZERO-GAP Rings are constructed of high strength 7075 T-6 aluminum. This material is ideal for the application due to its impressive strength; even more impressive strength-to-weight ratio when compared to heavier steels.