Electronics: The biggest, and newest, change in riflescopes is the integration of electronics. SIG's BDX system works with a rangefinder to illuminate an aiming point in the reticle for a ranged target. Revic's scopes feature onboard sensors that gather environmental information to calculate the bullet's point of impact, which is shown in the scope's viewfinder. Swarovski's latest has an integrated rangefinder that performs its own ballistics calculations. This is just the beginning. As scopes, rangefinders, binoculars, and ballistics apps learn to communicate more efficiently, our ability to make long-range shots will only increase.