A quality of a rifle scope can be just as important as the quality of a rifle and this is because a rifle is only as good as the person using it and that person is only as good as their aim which often depends on the quality of their scope. The best scopes could cost more than $1000 or $2000 but they are often large and heavy. Although these expensive scopes are possibly ideal for target shooting, their size and weight make them impractical for hunting, military or even for most law enforcement agencies. Although there are also very expensive scopes that are more suitable or versatile use, there are some, like the Vortex Spitfire 3X which is often to an acceptable standard for most shooters and only costs less than $500. This is not the lightest scope available as some weigh as little as 9 ounces but with a weight of only 12.2 ounces, is among some of the lightest scopes. The scope is rugged enough for most situations including law enforcement work. This scope is made by Vortex Optics who, since it was only founded in 2002, you may not have heard of before but they are rapidly becoming very popular and earning a reputation for providing high quality optics at reasonable prices. With the speed with which this American company is becoming popular, its name may soon become as famous as the already long established scope makers like Aimpoint and Leupold.
Regardless of which company makes a scope, before you buy one you have to check several things. Obviously you may be concerned about the price but apart from that, you will want a scope whose size and weight is compatible to whatever type of shooting you intend to do. The weight and size is a major concern to anyone other than target shooters as it may have to carried, along with the rifle, for many miles and in these circumstances, any extra ounce can feel like extra pounds before the end of the day. For the best accuracy and the best shooting, the rifle and the scope should become as one and so ensuring that both have compatible attachments can make a hug difference. Although some people do adapt the fittings and claim that it does not affect the accuracy, I believe that any alterations could make a scope less accurate than its full potential would be without alterations.
Other things that you may want to look at are the type of sight, such as cross-hair or red dot, how weather proof the scope is including is resistance to water. The Vortex Spitfire for instance, is not fully water proof but is at least water resistant. The eyepiece should be one that you feel comfortable with and so there is no right or wrong one, it is a choice which is personal but choosing the right one or you will save frustration later. Even though you think you may know the exact scope you want to buy, it may be best to check out a couple of others anyway.