H & K or HK (Heckler & Koch) A German real-steel gun manufacturer renowned for building some of the highest quality guns available. Some of their firearms have achieved worldwide popularity including the P7 pistol and the G36 assault rifle.

HMG (Heavy Machine Gun) An HMG is a high-powered machine gun that fires large to medium caliber ammunition These guns are designed for prolonged firing from heavy mounts and static positions. These guns usually take a crew of several men to operate and are generally belt fed. An example of a heavy caliber machine gun would be the Browning M2. There are several Airsoft replica models available

HOP-Up (HOP) A small piece of rubber installed in most Airsoft guns that can close to double the range of an Airsoft BB. This small piece of rubber is usually placed inside the back end of the barrel through a hole in the top. When the gun is fired the rubber piece grips the top of the BB creating back spin. Although causing the BB to move through the air a bit slower, the “hop-up” effect increases its range.

ICS (I Chih Shivan Enterprise Co.) Founded in Taiwan in 1983, ICS specializes in the production of Automatic Electric Airsoft Guns (AGS). Their replica AEGs are some of the finest detailed guns in the industry. They are also known for their high quality after market parts.

IMI (Israel Military Industries) IMI is an Israeli government-owned firearm manufacturer. Although mainly producing real-steel arms for Israeli security forces, their firearms are the popular weapons of choice of top military units and law enforcement agencies around the world. Some of the most popular weapons systems include the Uzi Smg, JERICHO and BARAK hand guns, and the NEGEV Lite Machine Gun. IMI is also the maker of the popular GALIL Sniper Rifle.