A Glock handgun is a type of semi-automatic pistol that utilizes a striker-fired action. This means that instead of using a traditional hammer to strike the firing pin, the Glock uses a spring-loaded striker to do so.
When the trigger is pulled, the striker is released, striking the primer of the chambered cartridge and causing it to fire. The recoil energy created by the firing of the cartridge then causes the slide to move rearward, which ejects the spent cartridge and chambers a new round from the magazine.
The Glock also features a polymer frame, which is lightweight and durable. The barrel and slide are made of steel. The magazines are made of a high-density polymer and can hold a variety of rounds, depending on the model and caliber of the Glock.
The Glock also features a Safe Action trigger system, which includes three internal safeties to prevent accidental discharge. The first safety is a trigger safety, which prevents the trigger from moving unless the trigger is pulled. The second safety is a firing pin safety, which blocks the firing pin from moving forward unless the trigger is pulled. The third safety is a drop safety, which prevents the gun from firing if it's dropped.
Overall, Glock handguns are known for their reliability, durability and ease of use, and are popular among law enforcement agencies and civilians alike.