134a A type of Airsoft gas One of the weaker Airsoft gun gasses, 134a is safe for use in all G88 and NBB guns. Most often than not the warranties of most of the guns manufactured by eastern producers are voided unless 134a gas is used.

328fps 328 Feet per second – the accepted muzzle limit for AEGs in the UK.

6mm Diameter of BBs used in Airsoft models.

AAT Arme Automatique Transformable.

ACP (Automatic Colt Pistol) ACP is the abbreviation describing the real-steel .45 caliber semi-automatic pistol bullet. This bullet was developed by Colt specifically for their 1911 range. The ACP bullet is larger and more powerful than average. The Airsoft replica models of the Colt 45 used the same 6mm plastic BB that all Airsoft guns use even though it is called the Airsoft “Colt 45 replica”.

AE Action Express Action Express is the name of the real-steel .50 caliber semi-automatic pistol bullet. This term is mainly used to describe the Desert Eagle GBB replicas as the “Desert Eagle .50 AEGBB”.

AEG (Acronym for Automatic Electric Gun) The most powerful of all Airsoft guns, the AEG is the popular choice of veteran aArsoft players. The AEG contains a series of gears that drives a spring powered piston. The entire system is battery powered.

After-market parts After-market parts are the upgraded parts that are available for most Airsoft replica guns after its original purchase. These parts include better built internal mechanisms, stronger springs, and other available enhancements.

Air-less Nozzle Upgraded version, which improves performance by making a better seal.