OPTIX Hunting Series. The new OPTIX series offers fully multi-coated lenses, one-piece aluminum tube construction, low profile zero-reset turrets, fast focus, two-piece weaver rings, as well as BSA’s new BDC-8 reticle. The 4. 5-18X model offers an adjustable objective and red / green illuminated reticle, in addition to the above features. Matte black finish. Waterproof, Shockproof and Fogproof. Weight 20. 9 oz. Length 13. 4 inches BSA Optics is managed by hunters. So we know how important it is to have a scope that you can trust. That's why we want to be able to offer bright, dependable scopes to every type of hunter - from novice to seasoned pro, and still keep them affordable. We have a complete range of models that cover every type of shooting. Take us along with you the next time you go out . You'll like what you see.