LYCOS RETRIEVER 
Glock: Glock Safe Action
built 674 days ago
On a Glock, the slide must first be racked to partially compress the striker (or firing pin) spring and set the trigger before the pistol can be fired. After the slide has been racked and the trigger set, the standard Glock trigger pull feels somewhat like a two-stage, single action military trigger. The Glock Safe Action incorporates three separate safety mechanisms, all of which are automatically activated when the slide is at battery.
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The Glock 17 and all others that Glock has since produced use the "safe action" fire control system, a single-action mechanism utilizing a striker instead of a hammer and firing pin. Like most other striker-fired pistols, the Glock pistol requires the trigger to pull the striker back the rest of the way, and to release it. In its ready-to-fire state, the pistol could be considered to be "half-cocked". This arrangement translates to consistent trigger pulls which some claim makes training easier. Notably absent is any manual user safety, although a trigger safety and additional internal measures prevent accidental discharge. Its frame is made out of an advanced polymer.
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Glock pistols use an internal safety mechanism with three components, with no external thumb activated safety switch as might be found on traditional-design pistols. Glock calls this the "Safe Action" system. All three safeties are disabled one after the other when the trigger is depressed. They are:
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The essence of the basic Glock pistol design is simplicity and ease of operation. Glocks are hammerless, striker-fired, short recoil operated, autoloading pistols with a unique "Safe Action" mechanism. The Glock Safe Action is neither double action or single action, it is a new type of action.
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Glock Safe Action