Gáztömbök

Gáztömbök, a Hungarian term, translates to "gas blocks" in English. This term typically refers to a component in a firearm, specifically a gas-operated semi-automatic or automatic rifle. The gas block is a small but crucial piece that houses the gas system's mechanism, which harnesses the expanding gases from a fired cartridge to cycle the firearm's action, thereby chambering a new round and preparing it for the next shot.

In a direct impingement gas system, the gas block is positioned directly in front of the barrel and is connected to the bolt carrier group via a gas tube. When a round is fired, hot gas is directed from the barrel through a port into the gas block. This gas then travels up the gas tube and strikes the bolt carrier, pushing it rearward and initiating the ejection and reloading sequence.

In a short-stroke or long-stroke gas piston system, the gas block serves a similar purpose of capturing and redirecting gas, but it houses a gas piston instead of directly channeling gas to the bolt carrier. The captured gas pushes the piston, which in turn strikes a connecting rod or the bolt carrier itself, cycling the action. The design and placement of the gas block are critical for the reliable functioning of a gas-operated firearm, influencing factors like recoil, fouling, and overall weapon performance. Different firearm designs may feature variations in gas block construction and gas system operation.