Glock Pistol Cleaning Instructions

Field Cleaning your Glock Pistol

1. Safety Check (DO NOT SKIP)

  1. Point the Glock in a safe direction at all times.
  2. Remove the magazine.
  3. Pull the slide back and lock it open.
  4. Visually and physically check the chamber — no ammunition.
  5. Release the slide.
  6. Pull the trigger ONLY after confirming the pistol is unloaded
    (This is required for Glock disassembly.)
  7. Move all ammunition to a different room.

2. Field Strip the Glock

  1. Hold the pistol normally.
  2. Pull the slide back about 1/8 inch (very slightly).
  3. Pull down both sides of the slide lock simultaneously.
  4. Push the slide forward and off the frame.
  5. Remove:
    • Recoil spring assembly
    • Barrel

You should now have 4 main parts:

  • Frame
  • Slide
  • Barrel
  • Recoil spring assembly

3. Clean the Barrel

  1. Apply gun solvent to a caliber-correct bore brush.
  2. Run the brush from chamber to muzzle several times.
  3. Let solvent sit for 1–2 minutes if fouling is heavy.
  4. Run solvent-soaked patches through the barrel.
  5. Follow with dry patches until clean.
  6. Lightly oil a patch and run it through once.
  7. Wipe the barrel exterior clean.

⚠️ Do not over-oil the barrel.

4. Clean the Slide

Focus on:

  • Slide rails
  • Breech face
  • Extractor area
  • Firing pin channel opening (external only)

Steps:

  1. Apply solvent to a nylon brush or toothbrush.
  2. Scrub carbon buildup from metal surfaces.
  3. Use cotton swabs for tight areas.
  4. Wipe everything dry.

⚠️ Do NOT spray solvent or oil into the firing pin channel.
This can cause malfunctions.

5. Clean the Frame

  1. Use a dry or lightly solvent-dampened brush.
  2. Clean:
    • Frame rails
    • Trigger bar area
    • Feed ramp area
  3. Wipe dry with a lint-free cloth.

⚠️ Do not soak the polymer frame in solvent.

6. Clean the Recoil Spring Assembly

  1. Wipe with a dry cloth.
  2. If very dirty, lightly wipe with solvent.
  3. Do NOT oil the recoil spring.

7. Lubrication (Very Important — Glock Uses Minimal Oil)

Glock recommends only 4 small lubrication points:

Apply ONE drop of oil to each area:

  1. Barrel exterior
    • Lightly coat the barrel where it contacts the slide
  2. Slide rails
    • One small drop spread across all rails
  3. Connector
    • A drop where the trigger bar meets the connector
  4. Barrel hood
    • Where the barrel locks into the slide

❌ Do NOT oil:

  • Firing pin channel
  • Magazine
  • Recoil spring
  • Excessively anywhere else

8. Reassemble the Glock

  1. Insert the barrel into the slide.
  2. Install the recoil spring assembly.
  3. Align the slide with the frame rails.
  4. Pull the slide fully rearward and release.

9. Function Check (Unloaded)

  1. Rack the slide several times.
  2. Pull the trigger (you should hear a click).
  3. Hold trigger to the rear, rack the slide.
  4. Slowly release the trigger — you should feel and hear the reset click.
  5. Rack slide again to ensure smooth operation.

10. Final Wipe & Storage

  1. Wipe exterior with a lightly oiled cloth.
  2. Store unloaded in a locked container.
  3. Use a desiccant if storing long-term.

Cleaning Frequency

  • After every range session
  • Every few months if stored
  • Immediately after exposure to rain, dirt, or sweat

Truly Epic FFL 
701 W. Valley Forge Rd.
King of Prussia, Pa. 19406
(610) 220-2001

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