Airsoft Pellet Guns by Type
See Also : Airsoft Pellet Guns by Weight...
In addition to (crude oil derived) plastic, starch-based biodegradable plastic, metal or graphite-coated and solid-steel pellets are also available. Airsoft pellet guns are most commonly found in white and yellow, but since the plastics most commonly used are readily colored, many other colors of airsoft pellet guns are produced
Biodegradable Airsoft Pellet Guns
Biodegradable airsoft pellet guns are available, and are often required by outdoor fields where sweeping up is not an option, conventional airsoft pellet guns are a pollutant of the environment, most ordinary airsoft pellet guns have a 
mineral center coated with types of plastic that degrade over hundreds of years, if at all. Biodegradable airsoft pellet guns are made of various types of resin, often developed for the agricultural industry, and in the better makes are certified as compostable.
There is a mixture of degradable processes being used, such as soil microbes and photosensitive degradation. Biodegradable airsoft pellet guns development is now producing ammo with all the characteristics of the best of the conventional, with homogeneous resin construction.
Various EEC countries now only permit biodegradable airsoft pellet guns to be used, and many land agents are also insisting on their use on rented land. Airsoft guns worldwide is very late in coming to universal usage of biodegradable airsoft pellet gun products which paintball has long achieved with its munitions.
Tracer Airsoft Pellet Guns
Glow in the dark pellets, known colloquially as tracer. This airsof pellet guns can be used in conjunction with a device that "charges" the airsoft pellet guns by flashing them with a burst of visible light on leaving the barrel, so that they remain luminescent in flight for use during nocturnal games/operations. This tracer unit is usually hidden from view, often disguised as a suppressor (silencer) or is included inside the magazine of airsoft guns. There are also biodegradable Glow in the dark airosft pellet guns available.
Non Spherical Airsoft Pellet Guns
There have also been model of airsoft guns that use non-spherical pellets. The best known of these is the Asahi "Blade Bullet", which are now extremely difficult to find and quite expensive to buy. These arisoft pellet guns were designed to be shot from the short-lived Asahi M700 and M40 premium grade airsoft rifles, which were produced in 1993. Compatibility with other airsoft guns is highly limited, especially due to their incompatibility with hop-up features.
Paintballs
Paint filled airsoft pellet guns are also available, called markerballs, which are very similar to those used by paintball. Model of airsoft guns equipped with the hop-up projectile stabilizing system are not able to use 
these, as the thin shells are liable to break in the barrel, soiling it with paint. These special pellets are also incompatible with model of airsoft guns using mechanized feed systems, such as high capacity magazines, for the same reason. Paintballs generally are bad for the airsoft guns and often cause jams or other internal problems. With some companies, the use of paintballs voids the airsoft gun's warranty. However, they have recently invented 6mm paintballs, made specifically for the use of airsoft guns. These six millimeter paintballs are only usable for some airsoft guns, though. It is highly recommend to not use them as they will not work well. These rounds have a tendency to burst and/or rupture in the barrel and action.
Proprietary Airsoft Pellet Guns
Also, during the early 1980s, most maker of airsoft guns used their own proprietary airsoft pellet guns. Companies such as Masudaya and tradeMark Airguns had varieties of ammo, such as the flat-headed "Long Range" ammo used in the Masudaya Bolt series, or the soft rubber conical pellets used in the tradeMark Falcon-077.[citation needed]
See Also : Airsoft Pellet Guns by Weight...