The all-new Simmons Pro Rimfire Riflescopes offer an all-glass optical system providing crisp images in low lighting conditions with fully coated lenses and IPX7 waterproof, fog-proof and shockproof construction giving you piece of mind in the outdoors. Built with an aggressive and rugged new design including textured magnification power change ring and capped finger adjustable windage and elevation turrets. The Pro Rimfire riflescopes feature a one-inch one-piece aluminum main tube with a 50-yard rimfire-specific parallax and a Simmons .22 Drop Zone reticle.