Glossary

AEG

AEG (Automatic Electric Gun) is a type of airsoft gun powered by an electric motor. A battery-powered motor spins a set of gears inside a gearbox, which compress a piston. When released, the piston pushes air through a nozzle into the hop-up chamber…

ASG

ASG (Airsoft Spring Gun) is a type of airsoft gun powered by a spring. Before each shot, you must manually cock the slide or bolt to compress the spring and prepare the gun to fire. What is an ASG ASG guns work on a simple mechanical principle.…

BlowBack

Blowback is a system used in airsoft and gas-powered guns that moves the slide back and forth to simulate the recoil of a real firearm. After firing, gas (CO2 or Green Gas) pushes the slide rearward, and a spring returns it forward, readying the gun…

Clip point

Clip point is a blade shape with a concave or straight cutout (clip) on the spine near the tip. This design creates a thin, sharp point suited for precise piercing and detail work. What is a clip point A clip point blade has a concave or straight…

CO2

CO2 is a propellant gas used in air guns and airsoft guns. CO2 cartridges weighing 12 g contain liquefied carbon dioxide at roughly 850–900 PSI (58 bar) at 21 °C. Once the cartridge is punctured, the CO2 gradually evaporates and gas pressure drives…

CRZ

Double Action

Double action (DA) is a trigger mechanism that performs two actions with a single trigger pull – it cocks the hammer and releases it to strike. The shooter does not need to manually cock the hammer before firing, which speeds up the first shot. The…

Drop point

Drop point is a blade shape where the spine curves downward in a convex line toward the tip. This design creates a strong tip and a large cutting area, making it the most versatile blade shape. What is a drop point A drop point blade has a spine…

EDC

EDC (Every Day Carry) refers to items a person carries daily for routine use and unexpected situations. In the context of knives, it means compact folding knives designed for daily carry. What is an EDC knife An EDC knife is a compact, lightweight,…

FFP

FFP (First Focal Plane) refers to the front focal plane in a riflescope. In FFP scopes, the reticle scales proportionally with magnification, allowing accurate distance measurement and corrections at any power setting. What is FFP and how does it…

FPS

FPS (Feet Per Second) is a unit of projectile velocity used mainly in the airsoft community and for air rifles. It indicates how many feet a projectile travels in one second. What is FPS FPS measures the muzzle velocity of a projectile at the…

Frame lock

Frame lock is a locking mechanism for folding knives where part of the metal handle acts as the blade lock. It offers greater strength than a liner lock and is the standard on premium tactical and EDC knives. What is a frame lock A frame lock works…

Full tang

Full tang is a knife construction where the blade and handle form a single piece of steel. Handle scales are attached to both sides of this steel frame. This design provides maximum strength and durability. What is full tang On a full tang knife,…

Full-auto

Full-auto (fully automatic) is a firing mode where the weapon fires continuously as long as the trigger is held. Firing stops when the trigger is released or the magazine is empty. What is full-auto A fully automatic mechanism repeats the cycle of…

GBB

GBB (Gas Blowback) is a type of gas-powered airsoft gun that simulates real firearm recoil by cycling the slide with each shot. What is GBB GBB guns use compressed gas (Green Gas or CO2) to fire a BB and move the slide backward at the same time.…

GBBR

GBBR (Gas Blowback Rifle) is a gas-powered airsoft rifle with recoil simulation. Gas propels both the BB and the bolt carrier, which cycles rearward with each shot just like a real firearm. How does a GBBR work? A GBBR uses compressed gas stored in…

GreenGAS

Green Gas is a propane-butane mixture used to power gas airsoft guns. It contains silicone oil that lubricates the gun’s internal mechanism during firing. What is Green Gas? Green Gas consists of roughly 90% propane, 8–10% butane, and a small…

Hop-Up

Hop-up is a mechanism in airsoft guns that applies backspin to a BB. This spin stabilizes the projectile in flight and greatly increases both range and accuracy. What is hop-up Hop-up uses the Magnus effect – a spinning object in an airflow…

HPA

HPA (High Pressure Air) is a pneumatic system for airsoft guns. It uses compressed air from an external tank, fed through a regulator, to propel BBs with highly consistent power output. How does HPA work? An HPA system consists of four main…

IR illuminator

IR illuminator (infrared illuminator) is a device that emits invisible infrared light for night vision devices. It allows seeing in total darkness where a night vision device lacks ambient light to amplify. Common uses include night hunting, wildlife…

Joule

Joule is a unit of energy used to measure the power of air guns and airsoft guns. In many countries, the joule value determines the legal classification of an air gun. What is a Joule Joule (symbol J) measures the kinetic energy of a projectile at…

Karambit

The karambit is a knife with a distinctive curved blade shaped like a tiger’s claw. It originates from Southeast Asia and was originally used as an agricultural tool. Today it is popular for self-defense and tactical use. What is a karambit A…

Liner lock

A liner lock is a locking mechanism for folding knives where a thin steel spring inside the handle secures the blade in the open position. It is one of the most common lock types found on modern pocket knives. What is a liner lock A liner lock uses…

Mechbox

A mechabox (gearbox) is the mechanical-electrical system inside AEG-type airsoft guns. It converts battery power into pneumatic force that propels BB pellets. What is a mechabox? Tokyo Marui developed the mechabox in 1991. The system houses an…

MilSim

MilSim (Military Simulation) is a form of airsoft games that replicates real military operations. Unlike casual airsoft, it focuses on realism, teamwork, and a chain of command. What is MilSim? MilSim events typically last 24–72 hours without…