Headcrab Shells

Headcrab Shells are launched from Headcrab Canister Launchers, which is a unique building to the Combine. The Headcrab Canister launcher fires headcrab canisters and has a range of about 65% of the map. However, it must not be blocked by the Fog Of War, or it will not launch. It is able to fire 4 canister types, Poison Headcrabs, Fast Headcrabs, Normal Headcrabs, and an empty shell.