The Grinder was built with the hard working, hard hunting, hill busting hunter in mind. Solid built from the ground up, this sight was designed as a set it and forget, no frills, hunting sight. If you are looking for a compact, easy to adjust, fixed pin sight, capable of withstanding even the most rigorous of hunts, day in and day out, year after year, look no further. New MRT Pin Guard. Without Gang Micro Adjustments. Lightest fixed pin sight in our line up. Simple, Durable Gang Adjustments. Rugged Compact Design. Solid 6061 Aluminum Construction.