• The photographs and drawings in this manual reference the GLOCK 17 Gen4 pistol. Unless otherwise indicated, they are equally applicable to other models and previous versions of the GLOCK pistol.

• The three automatic independently operating mechanical safeties are built into the fire control system of the pistol. All three safeties disengage sequentially as the trigger is pulled and automatically reengage when the trigger is released.
  • 1. The Trigger Safety is a lever incorporated into the trigger. When the trigger safety is in the forward position it blocks the trigger from moving rearward. The trigger safety and the trigger must be fully depressed at the same time to fire the pistol. If the trigger safety is not depressed, the trigger will not move rearward and allow the pistol to fire. The trigger safety is designed to protect against firing if the pistol is dropped or the trigger is subjected to lateral pressure.
  • 2. The Firing Pin Safety mechanically blocks the firing pin from moving forward in the ready-to-fire condition. As the trigger is pulled rearward the trigger bar pushes the firing pin safety up and frees the firing pin channel. If the user decides not to fire and releases the trigger, the firing pin safety automatically reengages.
  • 3. Drop-Safety. The trigger bar rests on the safety ramp within the trigger mechanism housing. The trigger bar engages the rear portion of the firing pin and prevents the firing pin from moving forward. As the trigger is pulled rearward the trigger bar lowers down the safety ramp and allows the release of the firing pin. After firing, the trigger bar moves upward and reengages the firing pin.
• If a cartridge becomes jammed while being chambered or extracted, follow the steps below to remove it.
  • While keeping the muzzle of your GLOCK pistol pointed in a safe direction (a safe direction is one in which no one can possibly be injured in the event of an unintentional discharge), remove the magazine if possible by pressing the magazine catch.
  • While holding the grip with your firing hand, with your finger off of the trigger and outside of the trigger guard, grasp the rear of the slide at the serrations with your other hand and pull the slide fully back.
  • Lock the slide in the rearward (open) position by pushing up on the slide stop lever and slowly releasing the slide from the fully rearward position until it locks in the open position.
  • If the above steps have not removed the jammed cartridge, carefully remove the jammed cartridge from the chamber using your fingers or a pointed wooden dowel.
  • If you are unable to remove the jammed cartridge using the above steps, leave the slide locked in the rearward (open) position and contact the GLOCK entity for your region or a GLOCK-Certified Armorer.
• To field strip (disassemble) your GLOCK pistol for cleaning, follow the instructions below. To ensure that your GLOCK pistol is unloaded, disassembly MUST be performed in this order.
  • 1. Remove the magazine by pressing the magazine catch (Picture 16).
  • 2. While holding the grip with your firing hand, with your finger off of the trigger and outside of the trigger guard, grasp the rear of the slide at the serrations with your other hand and pull the slide fully back to eject any cartridge that may be in the chamber (Picture 17).
  • 3. Lock the slide in the rearward (open) position by pushing up on the slide stop lever and
    slowly releasing the slide from the fully rearward position until it locks in the open position (Picture 18).
  • 4. Once the slide is locked to the rear, both visually and physically (with your finger) inspect both
    the chamber and the magazine well of the pistol to be sure that no ammunition remains in either
    place (Picture 19).
  • 5. Release the slide to return it to the forward (closed) position by either pressing the slide stop lever down or grasping the rear of the slide at the serrations with your other hand and pulling the slide fully back and then releasing it.
  • 6. With the muzzle of your GLOCK pistol pointed in a safe direction, pull the trigger.
    • (Note: The trigger must be in the rearmost position to remove the slide) (Picture 20)
  • 7. Hold your GLOCK pistol with your firing hand with your fingers across the top of the rear of the slide in front of the rear sight and your thumb on the rear of the frame (Picture 21).
  • 8. Using your fingers, retract the slide (1) about 1/8 in. / 3mm and hold it in this position (Picture 22).
    • (Note: If you pull the slide too far to the rear, it will reset the pistol’s trigger to the forward position. If this happens, pull the trigger again while keeping the muzzle of your GLOCK pistol pointed in a safe direction)
  • 9. Using the thumb and index finger of your nonfiring hand, pull the slide lock down evenly on both sides (Picture 23).
  • 10. While holding the slide lock down, push the slide forward and off of the frame (Picture 23).
  • 11. Press the recoil spring assembly toward the front (muzzle end) of the slide while pulling it up to remove it from the slide (Pictures 24-25).
  • 12. Holding the barrel by the barrel locking cams, lift it and push it toward the front of the slide and then pull it up and toward the rear to remove it from the slide (Picture 26).

• To reassemble your GLOCK pistol, follow the instructions below.
  • 1. Holding the barrel by the barrel locking cams, insert it into the slide by pushing it down and in (Picture 36).
  • 2. Insert the recoil spring assembly into the slide by placing the small end of the recoil spring assembly in the indentation in the front of the slide and pressing the other end of the recoil spring assembly towards the front of the slide to compress the spring and pushing down until the large end of the recoil spring assembly rests in the second (semi-circular) notch on the barrel
    locking cams (Pictures 37-39).
  • 3. Holding the frame in your firing hand, with your finger off of the trigger and outside of the trigger guard, place the slide on top of the frame in front of the slide rails and push the slide towards the back of the frame until the slide lock snaps up to lock the slide into place (Picture 40).

Glock Gen 1-4 User Manual

Glock Gen 1-4 Exploded View