Vortex&';s 4-12x40 Diamondback scope is built to endure, perform, and excel, and features a 1.0" tube, an adjustable objective, 1/4 MOA adjustments with 66 MOA of travel, low-profile turrets, a Dead-Hold BDC reticle, fog-proof and a matte black finish. A riflescope is mounted on a firearm by using mounting base gunsmith&';s skill are needed to install the product properly. The 4-12x magnification gives a clear view for long range shots. This riflescope is shockproof and waterproof which is great for the winter season too. It also gives the Fogproof lens feature which is perfect for hunters to use anytime of the day. Features Included in the Box Fully Multi-Coated Second Focal Plane Reticle Aircraft-Grade Aluminum Waterproof, Fogproof, Shockproof, Removable lens covers Lens cloth Vortex VIP Warranty VIP stands for a Very Important Promise to you, our customer. Vortex will repair or replace your VortexA(R) product in the event it becomes damaged or defective-at no charge to you. If Vortex cannot repair your product, Vortex will replace it with a product in perfect working order of equal or better physical condition. You see, it doesn&';t matter how it happened, whose fault it was or where you purchased it. If you ever have a problem, no matter the cause, Vortex promise to take care of you.