Both MOA dots are guaranteed to provide you with a lot of precision and they can work well in all conditions. The main difference is that the Vortex Viper is designed with a 6 MOA dot while the Fast fire model makes use of a 3 MOA dot. They are designed with amazing build quality and you are guaranteed that they will benefit from their exceptional features. It makes use of a CR-1632 battery that is not easily accessible.Д«oth the Burris Fast fire 3 and the Viper Red dot are light in weight and very compact.Shooters can only use the single dot choice provided.To replace this battery, the sight must be detached. The Viper red dot makes use of a CR 2031 battery model. Optics controls and functions are designed on the right-hand side. The unit remains safe from dangerous climatic conditions. It is impervious to external factors such as fog, snow, and water. Vortex Viper also has a nice matte finish and a very low glare. It also reduces the clarity giving users a chance to enjoy a great view. Vortex Viper is designed with a multi-coated lens and this adds to the light transmission. Its size of this sight does not allow you to mount it on any kind of height pistol sight that is suppressed. The G MOA feature ensures that you can benefit from a quick target acquisition function even when positioned at a close or medium range. This red dot has a very low-profile design and it is specifically made for pistols and handguns that come with cut-outs on the slide. View Price on Amazon Vortex Viper Red Dot Many users have complained that the on and off switch is not as strong and can easily disintegrate and break.It is one of the most affordable sights in the market.Brightness features as well as the shut off function operate automatically and can run up to 9 hours.This sight works well with numerous rifles and shotguns and it is an ideal for any type of shooting competition or hunting activity. The surface area of the sight is great at ensuring that the battery will not die, even if you do not turn it off. Fastfire III also has an automatic turn off function. You can also make use of the auto-adjustment feature to turn on the sight or turn it off.Д«attery life of the fast fire model can last up to 5 years. All the brightness options are ideal for shooters who would like to make use of night vision optics. This is the off button as well as 3 other brightness settings. With just one single button, you can toggle between 4 different settings. Shooters are assured that they will be provided with a very wide field of view. It has a very nice design and ideal glass. The Burris Fastfire 3 is strong and durable yet one of the most affordable options in todayвЂ™s market. 3 MOA vs 6 MOA RED DOT вЂ“ A Comparison Burris Fastfire 3 The images of the Vortex Viper is are a clear indication that this optic is a better option than the Burris Fastfire 3. This amazing quality proves that the field of view of the Vortex Viper is wider than the Fastfire. The lens diameter of the Vortex Viper is much wider than the Fastfire. The Vortex Viper is not a pioneer model like the Fastfire, however, it still performs well in the market attracting numerous shooters. Quality of the ImageДЇor many years the Burris Fastfire 3 continues to attract users because of the quality of produced images. When it comes to the weight, the Viper Red Dot is a better option than the Fastfire as shooters prefer to work with a model that is lighter in weight. Both models measure 1.9 inches which is great as this means they are both small in size. Mounting the Fastfire onto these rails increases the total weight, however, users should not use the optic without attaching it onto the Picatinny rails. To ensure that users can enjoy a maximum level of applicability, the Burris Fastfire must be placed on to Picatinny rails. According to very many shooters as well as experts, a slight difference even of only 0.1 ounces can greatly influence your performance while on the field. They have a slight weight difference of only 0.4 ounces. Vortex Viper Red Dot, as well as the Fastfire 3, are both lights in weight. This proves that it is better to focus and work with a 6 MOA red dot than a 3 MOA red dot. The 6 MOA dot provides users with a clear and crisp target acquisition function when compared toa 3 MOA dot. 6 MOA optic is more advantageous especially when it comes to all types of tactical applications. Quickly firing at a moving target with a handgun or a pistol is not as easy as it seems. In this case, a smaller dot is preferable. The difference between both MOA is quite large and shooters can easily notice this as soon as they have made use of both optics. Vortex Viper is designed with a 6 MOA while the Burris Fastfire 3 comes with a 3 MOA option. The 3 MOA and 6 MOA вЂ“ How do they compare Size of the Reticle

3 moa vs 6 moa for ar