The AR-15 was pretty much like the M16, it did not get the attention it was supposed to have; it was not the soldiers first choice for the weapon of choice for modern warfare at all. Most of the soldiers did not believe that the AR-15 was indeed a good rifle at that time because they were used to using the older model guns.
Time passed and technology grew even stronger that they were able to create a better AR-15. With the upgrades that the AR-15 has gotten both soldiers and marines rely on this accurate weapon to protect their lives on the ground. It is now on the same level as the M16A2 and the M4. A lot of people are now using the AR-15 today especially that it is an accurate firearm. These firearm enthusiasts and home defenders chooses the AR-15 as a weapon for protection and they have plenty of reason why.
The AR-15 was designed to be customizable and that is something that most firearm users look for in a rifle. The AR-15 is a rifle that can be customized to fit its user very well. Sport shooters are in love with the AR-15 because of how it is today. Arguably the AR-15 is the best rifle to use for having fun with targets or for competitions. It is because the AR-15 is incredibly accurate.
The basic shooting training for any army is going to be using rifles and shooting them on targets three hundred meters away with just an iron sight to use. With a good instructor helping you, even if you have no experience holding a rifle and shooting it, with an AR-15 you will have an easier time. In a few weeks of training with an AR-15 you will be able to learn a lot about handling a gun and shooting it.
You can customize the AR-15 which makes it a perfect firearm for anyone compared to the M16 and M4 which are both uncustomizable. There are a lot of custom AR-15 accessories that you can use to build your own AR-15. There are people who pick to buy their AR-15 while others pick to build their own. If you want to own a rifle that fits you perfectly, a customized AR-15 is what you need; your cheeks can meet the stock perfectly. Peering through your iron sights or scopes will be a lot easier. After you install every AR-15 accessory you have for your firearm, you can finally get firing.
Maybe it would be better if you try to buy instead of building but check out the factors first. There are advantages to buying an AR-15 but there are also disadvantages to it,
You will have an amazing rifle if you decide to buy an AR-15, that is a fact. But think about building one to the exact measurements of your body, imagine how accurate you can shoot that kind of AR-15.