Crimson Trace BRUSHLINE Pro 4-16X42 1" Pro Riflescope 01-01400 Model Brushline Pro Riflescope Finish Black Anodized Waterproof/Shockproof Second Focal Plane |Side Focus Spring-Loaded Zero Reset Magnification 4X - 16X Main Tube Size 1" Objective Size 42mm Optic Adjustments 1/4 MOA Reticle BDC Pro Reticle