Nikon Buckmaster II 3-9X40 BDC Rifle Scope 16343 Multiple layers of anti-reflective compounds on every glass surface provide bright, vivid pictures and optimum light transmission from dawn to dusk. Positive-click reticle adjustments get you zeroed in quicker and maintain your setting, even with heavy recoil. Spot On allows you to discover all of the exact aiming points on your scope’s reticle at various yardages for your specific ammunition and load.