Airsoft A to Z
AEG: Automatic Electric Gun. The most popular kind of gun on the market.
CQB: Close quarters battle. Airsoft guns designated as CQB usually have a lower power and are meant to be fired at a close range.
Mechbox (aka Gearbox): The mechanism which enables AEGs to function.
Chronograph: The device used to test the speed of a projectile, usually to determine if the speed is a safe rate.
Low-cap: Reliable magazines which hold fifty to one hundred BBs.
Mid-Cap: Medium capacity magazines that function as well as low-cap magazines but can hold more BBs.
Zeroing: The process of making your shots align with the sight of the gun.
EBB: Electric Blow-Back. These are pistols in which the slide moves backwards and forwards when being fired. While this increases realism, it decreases power, as energy must be diverted to power the blow back effect instead of being focused on the actual firing of the projectile.
Breech: Where the BB sits immediately before being fired.
BDU: Battle Dress Uniform. The clothing and gear worn by a player during an airsoft game.
GBB: Gas Blow-Back. Similar to the EBB, except more realistic and powerful.
CA: Classic Army, a popular manufacturer of airsoft guns.
BB: Ball bearing. 6mm and spherical, this is the ammunition used in airsoft. The most common weights of BBs are .12g and .20g.
FPS: Feet per second, a measure of the velocity of airsoft projectiles.
ROF: The rate of fire. Usually measured in RPM, rounds per minute. If an airsoft gun can shoot 500 rounds in 1 minute, it would have an ROF of 500RPM.
Hop-Up: A device which increases the range of an airsoft gun, by putting backspin on each individual pellet.
After-market parts: Anything you can purchase to upgrade or enhance your gun.
Hi-Cap: High capacity magazines. Can hold hundreds of BBs, and usually require a wheel at the bottom of the magazine that needs to be wound occasionally to keep upward feeding pressure on the BBs.
Slide: The primary moving section of an automatic airsoft gun. It takes a round from the magazine, loads it into the breech, and fires it.

