There are many variants of airsoft rifles available. While all of them function relatively similarly, the primary differences are apparent in the designs of the guns.
One of the most widely known variants is the AK-47. This rifle was developed in the 1940s and is one of the most simplistic rifles available. It is used throughout the world and is a popular replica.
The Steyr AUG is an Austrian rifle manufactured since the late 1970s. It has an easy to hold design, is notably sleek, and is quite fast. Only recently has it become a widely used variant, as portrayal in the media has made it considerably more recognized
A fairly new type of rifle is the Heckler & Koch G36 assault rifle. The G36 is incredibly precise and has gained a lot of notoriety in its short existence. G36 airsoft guns are produced primarily by Classic Army and Echo1.
Echo1 also happens to produce several M14 variants. While the M14 is used much less than it was ten years ago, it still is somewhat prevalent and is great for reenactments.
A more modern variant similar to the M14 is the M16. This rifle is widely used in the American military as well as in airsoft games. Full metal airsoft M16s are especially powerful and are ideal for advanced players or professionals.
Another well known Heckler & Koch product is the MP5 submachine gun. The defining characteristic of this model is the small size and rapid firing rate, and these properties transfer over in to airsoft too.
These are just a few of the many variants available in airsoft. Even people who do not play airsoft like to buy airsoft guns just for the replica value, although to get the most out of them it is suggested that they actually be used.