How to Fix a BB Gun Pistol

If you have a BB gun pistol that isn’t functioning as expected, you’re not alone. Many BB gun owners encounter issues at some point. This article delves into troubleshooting and repair steps to get your BB gun back in working order.

Common Issues with BB Gun Pistols

Several problems can hinder the proper functioning of a BB gun. From trigger malfunctions to barrel obstructions, understanding the root of the problem is half the battle. Let’s delve into some common issues and their fixes.

BB Gun Won’t Shoot?

  • Barrel Obstruction: The first thing to check is whether the barrel has any blockages. Use a cleaning rod to clear out any possible obstructions. If obstructions persist, they must be removed for the gun to function correctly.
  • Trigger Misalignment: If your BB gun’s trigger isn’t working right, it might be misaligned. Adjusting the screws on either side of the trigger can solve this. Ensure they’re tightened evenly for proper alignment. Additionally, check the spring guide’s position to ensure it’s correctly seated.
  • Hop Up Adjustment: If your BB gun still doesn’t shoot properly after the above steps, you might need to adjust the hop up. There’s usually an adjustment screw on the top of the gun for this. However, be cautious—overadjusting can affect the BB’s travel distance.

Dealing with a Broken BB Gun

If your BB gun seems beyond a simple fix, don’t fret! Here are some things you can try:

  • Ensure the barrel remains clean and devoid of any blockages.
  • Check the air pressure. Ideally, it should hover around 200 psi.
  • If the BBs don’t travel straight, adjust the hop-up unit.
  • For persistent issues, consider consulting a professional technician.

Special Mention: Spring-Powered BB Guns

Spring-powered BB guns have a unique mechanism. The integrity of the spring is vital for transporting the BB from the magazine to the firing chamber. Occasionally, a BB pellet might get trapped in the spring’s loops, causing the gun to misfire. Here’s a simple fix:

  1. Cock the BB gun’s spring using the sliding plate on top. Press the trigger to release the spring. Repeat this twice more.
  2. Remove the magazine cartridge from the gun’s handle.
  3. With the sliding plate cocked back, shake the BB gun side to side. This action should eject the stuck BB pellet.
  4. For additional issues with the magazine cartridge, a straightened paper clip can be useful. Insert one end into the slot on the cartridge, compress the internal spring, and hold for about 30 seconds.

Valve Leak in CO2 BB Guns

If you own a CO2 BB gun like the Umarex Magnum Research Baby Desert Eagle and notice gas escaping, it’s crucial to identify the leak’s source. Here are steps to address this:

  1. Remove the magazine and check for air leaks. If the magazine leaks, it’s often due to a faulty O-ring. Replacing this inexpensive component can often fix the problem.
  2. If the issue persists after an O-ring replacement, check the valve. If undamaged, you can remove it, apply teflon tape, and then re-install it for testing.
  3. If leaks continue, the valve may be faulty and need replacement.
  4. If the gun remains problematic despite these fixes, it might be more economical to purchase a new one and retain the old one for spare parts.


1. How are BB guns powered?

BB guns are powered in three primary ways:

  • Mechanically: Using a spring mechanism.
  • Gas Cylinder: Utilizing a gas-filled cylinder to propel the BB.
  • Electrically: With the aid of an electric pump.

It’s important to note that as the sophistication of a BB gun increases, so does its price. However, this also means improved rate of fire and projectile speed.

2. How far will a BB gun shoot?

A standard airsoft gun can accurately shoot BBs that travel between 100 to 200 feet. However, with upgrades and enhancements, this range can extend to approximately 200 to 300 feet.

3. Can a BB gun break a window?

Yes, when shot from certain airguns, a .177 caliber steel BB has the potential to pierce the skin and break glass. It’s essential to exercise caution and only fire them at intended targets. Always prioritize safety and avoid shooting at objects or surfaces that can be damaged.


BB gun malfunctions can be frustrating, but with a bit of patience and troubleshooting, many issues are easily rectifiable. If you’re ever in doubt, always refer to your owner’s manual or seek professional assistance. Remember, safety first!

Harrison Baxter
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