Technical Information

The following are some steps you can take to self-diagnose your G&G Armament rifle or pistol replica. This can save time and money from sending in your product for repairs. Please note that these methods are meant for a user of any technical level.

No Sound or Response after Installing Battery and Pulling Trigger

Battery

  • Ensure that the battery is fully charged. Only use chargers compatible with your battery.
  • If possible, try the battery on another AEG and see if it will cycle.
  • Try multiple batteries. Using a friend's battery or one from a local shop/field can help determine if your battery is the issue.

Fuse

  • Check if the fuse's metal bridge has been burnt or split (commonly known as a blown fuse).
  • Replace the fuse with a 25 amp blade fuse.
  • If the fuse continuously shorts, check and see if there are any shorts in the fuse's wiring or contact RMA@101techcorp.com

MOSFET (If applicable)

  • Plug in your battery and pull the trigger while in Semi-Auto. Your MOSFET LED may start blinking or audibly beeping.
    • A Single beep indicates a low battery charge.
    • A Double beep indicates an internal issue. The internal gears may be misaligned, and/or the motor may be disconnected or damaged.
    • Multiple rapid beeps indicate the battery charge is completely diminished and will not shoot. Recharge your battery.
    • No blinking or audible beeps may require you to replace the MOSFET.

Motor Clips

    1. Remove the base of the pistol grip. This is typically secured by 2mm Allen screws.
    2. Inspect whether the red and black wires are plugged into the correct terminals of the motor (indicated by the color on the posts).

Pulling the Trigger Creates an Abnormal Sound

Grinding Sound

  • You may need to adjust the motor height.
    To adjust your motor height:
    1. Locate the screws at the base of the pistol grip. These screws require a flat-head screwdriver or a 2mm Allen key.
    2. Rotate counter-clockwise, pulling the trigger every half rotation. Listen for changes in sound from your rifle.
    3. Continue this process every quarter rotations (Clockwise-CW, or Counter-clockwise-CCW) until gearbox noise reaches a minimum
  • Shake gun and listen for sounds of something loose. This could be a sign of damaged gears or other foreign object that may cause internal damage if use continues. Please contact RMA@101techcorp.com for details on repairing.

Clicking Sound

May be an indication of the following:

  • Gearbox Lockout
    • Sometimes rapid trigger pulls can "lock up" your gearbox.
    • While pointing the rifle in a safe direction, switch the AEG to full-auto and pull the trigger.
    • If this fixes the issue, keep in mind that some AEGs are not equipped for rapid fire and require full trigger pulls to cycle properly.
  • Motor Height Needs Readjusting
    1. Locate the screws at the base of the pistol grip. These screws require a flat-head screwdriver or a 2mm Allen key.
    2. Rotate counter-clockwise, pulling the trigger every half rotation. Listen for changes in sound from your rifle.
    3. Continue this process every quarter rotations (Clockwise-CW, or Counter-clockwise-CCW) until gearbox noise reaches a minimum
  • Battery Issue
    • Depleted or damaged batteries may not have enough power to cycle the AEG.
    • If possible, try the battery on another AEG and see if the AEG will cycle.
    • Try multiple batteries. Using a friend's battery or one from a local shop/field can help determine if your battery is the issue.

Whirring Sound from Motor

  • Free Spinning Motor
    To check your motor:
    1. Locate the screws at the base of the pistol grip. These screws require a flat-head screwdriver or a 2mm Allen key.
    2. Rotate counter-clockwise, pulling the trigger every half rotation. Listen for changes in sound from your rifle.
    3. Continue this process every quarter rotations (Clockwise-CW, or Counter-clockwise-CCW) until gearbox noise reaches a minimum
    4. If the motor locks up, contact RMA@101techcorp.com for additional help.

Everything Sounds Fine, but no BBs are Firing

BBs Leave at Very Low Velocity, Sometimes Only Dropping Out

  • This is due to little to no compression, which may be caused by the following:
    • The seal on the piston head may be worn out.
    • This can also be a sign of a stripped piston rack or loose piston head.
  • If the above occurs, please email RMA@101techcorp.com for information regarding repairs.
No BBs Leave the Barrel
  • BB jammed in Barrel
    • Use unjamming rod that was included in the box with your AEG.
    • Normal the hop up turning it down BEFORE using the unjamming rod.
    • Use the angled side of the unjamming rod to enter the front of the inner barrel. Have the ramp in such a manner that it will push the BB out and down.
  • If issues persist, stop firing and contact RMA@101techcorp.com for additional help.
Magazine Not Feeding
  • Visually inspect the magazine
    • Check if BBs are rising to the top of the magazine BB window. If not, tap the magazine to see if it will loosen the jam.
    • If the magazine is a hi-cap and has a wheel on the bottom, be sure to fill the reservoir with BBs and wind the magazine (do not use a BB loader on a hi-cap magazine.
  • Move magazine position
    • Sometimes the magazines may not seat correctly in the magwell and thus not feed. Try test firing while pushing the magazine forward, back, up, or to the sides

We wanted to express the importance of proper maintenance of gas blowback systems. Due to the nature of the design, the moving air and exposure to the elements dries up seals and can introduce debris that can cause friction or reduce efficiency. Before continuing, please follow the steps of "Proper Maintenance of GBB Pistol." Proper maintenance and lubrication can alleviate the majority of the issues most players face.

Proper Maintenance of GBB Pistol

  1. You will need to tear down your pistol to the five essential parts: slide, barrel, recoil spring, lower, and magazine.
  2. Use a dry microfiber cloth or paper towel to wipe down as much as you can. Pay close attention to surfaces that come into contact with other parts that move with every shot.
  3. Next, you will need to use 100% silicone oil to lubricate any surface that will move along another surface. Use the oil sparingly, as a little will go a long way. You can use your finger, a cotton swab, or a clean part of the cleaning cloth you used in the previous step.
  4. Add a drop of silicone oil to every rubber seal. Spread the oil around with your finger to ensure every surface of the rubber is covered.
  5. On the underside of the slide, slide the nozzle forward to expose the green seal. Place one or two drops on the seal itself and cycle the nozzle several times to spread the oil evenly.
  6. Reassemble your GBB pistol and rack the slide several times. You should notice a smoother action when doing so.

After following the steps above, you are now ready to proceed with self-diagnosing and potentially repairing your GBB pistol.

Pistol Runs Out of Gas Before Firing All Loaded BBs

Being unable to shoot all rounds may be an indication of the inefficiencies of operating the pistol.
Be sure to watch out for the following:

  • Fully Fill Magazine
    • Be sure to fill the magazine completely vertically and upside down. Use gravity to aid you in the filling process. Find the right angle that wastes little to no green gas and continuously fill the magazine for ten to fifteen seconds.
  • Temperature
    • Cold temperatures can drastically decrease the efficiency of a gas magazine. This can be caused by cold environments or by continuous refilling of the magazine. Be sure to have your magazine reach room temperature before filling and operating.
  • Dryness
    • Dryness can create improper seals and hitches in the cycling of your GBB pistol. Please refer to the "Proper Maintenance of GBB Pistol" section for details in improving the efficiency of your GBB pistol.
  • Hop Up
    • The hop up helps create a seal that can help with the efficiency of shots. Be sure the hop up is on and is putting some pressure on the BB.

Valve Locks Up and Expels All Shots After a Few Shots

Please watch out for the following:

  • Ceramic Valve
    • Inspect the white ceramic valve inside the nozzle. If damaged, the slide will not be able to cycle as intended.
  • Nozzle
    • Inspect the nozzle as a whole. Cracks or abnormalities will significantly affect the function of the system negatively and lead to mechanical lockups.
  • Maintenance
    • Dryness and accumulated grime can greatly negatively impact the pistol's GBB system. Please refer to the "Proper Maintenance of GBB Pistol" section for details on improving the efficiency of your GBB Pistol.

Low FPS

May be an indication of the following:

  • Temperature
    • Cold temperatures can drastically reduce the efficiency of a gas magazine. This can be caused by cold environments or by continuously refilling the magazine. Be sure to have your magazine reach room temperature before filling and operating.
  • Dry Seals
    • Dryness can create improper seals and hitches in the cycling of your GBB pistol. Please refer to the "Proper Maintenance of GBB Pistol" section for details on improving your efficiency.
  • Nozzle
    • Cracks or abnormalities in the nozzle will significantly negatively affect the efficiency of the system and lead to a drop in FPS.
  • Hop Up
    • The hop up helps create a seal that can help with the efficiency of shots. Be sure the hop up is on and is putting some pressure on the BB.

Magazine Leaks when Refilling

May be an indication of the following:

  • Find out where the leak is occurring. Isolating noise can help pinpoint the exact location.
  • In most cases, tightening valves or adding a drop of silicone oil to the leaking components can help create a seal and stop the leak.
  • If leaking persists, it could be a sign of age or damage. Consider replacing the rubber seals or valves.

BBs Shoot Inconsistently or Curve Up/Down

May be an indication of the following:

  • Adjust Hop Up
    • Refer to "How to Adjust Hop Up" section for details on specific pistols.
  • Clean Barrel
    • Debris or oil can build up on the inside of the inner barrel. Use the included cleaning rod and strips of tissue or microfiber cloth to clean the inside of the barrel.
  • Check Velocity (FPS) using a Chronograph
    • FPS can have a direct impact on accuracy. If the FPS varies beyond a ten FPS range, then there may be an internal issue that must be addressed. Please email RMA@101techcorp.com for more information.

Still have issues and can't find a solution here?

Please fill out the RMA Request Submission Form. It will get you in contact with our RMA department for further assistance.

There are various methods to adjust your GBB pistol's hop up unit. Below is a list of GBB pistols and the tools used to adjust the hop up. NOTE: For safety reasons, be sure to EMPTY THE BARREL and REMOVE THE MAGAZINE before adjusting the hop up.

  • GTP 9 & SMC 9: Grip Tool
    • The hop up adjustment tool can be found in the base of the grip. Push in to release the tool.
    • Insert the tool into the barrel of the pistol. Rotate counter-clockwise to increase the hop up. Alternatively, clockwise will normalize (or turn off) the hop.
  • Piranha Series & GPM92 GP2: Mock Bullet Tool
    • The hop up adjustment tool is separate and in the form of a mock bullet. One should have been provided in the packaging of your GBB pistol.
    • Insert the tool into the barrel of the pistol. Rotate counter-clockwise to increase the hop up. Alternatively, clockwise will normalize (or turn off) the hop.
  • GPM92 & GPM1911 & GPM1911 CP
    • These GBB pistols have no tool but require the slide to be taken off.
    • The adjustment is located on the underside of the barrel in the center of the slide.
    • Locate the dial and rotate with the arrow to increase the hop, as desired.

GTP 9

Gun Cycles but Does Not Feed

  • Inspect the feed lip on the magazine. Check to see if you are able to remove the BB by pushing forward.
  • If not, the magazine may have been dropped, bending the lip. Bend the metal lip apart to clear a gap.

Ambi-selector Loose or Came Off

  • Locate the set screw on the underside of the ambi-selector. Use the appropriate hex key to tighten the screw.

GPM92

Pistol Fires but Slide Gets Stuck

  • Clean and re-lubricate the GBB pistol. Pay additional attention to the green top seal on the magazine for proper lubrication.
  • If it is still malfunctioning, please contact RMA@101techcorp.com. A replacement top gasket may need to be used.

Pistol Only Shoots Full Auto

  • Typically occurs after extended usage.
  • Sear has been worn down and requires replacement.

Piranha

Trigger Not Moving

  • Switch off safely, which is located directly on the trigger itself.

SMC 9

Not Firing

  • Ensure the selector is completely pushed in to one side and not in the middle.
  • Ejection port was closed while the bolt was locked back. Inspect the bolt to ensure it is pushed all the way forward; there should be no visible gap. Open both ejection ports and see if the bolt now moves forward.

Miscellaneous

Dust Cover of Ejection Port Will Not Open When Charging Handle is Pulled

  • Pry it.
  • Only close when the charging handle is forward.

GPM92 12mm CCW Male

GTP 9 12mm CCW Male

GPM1911/CP Version 14mm CCW Male

Piranha Series 12mm CCW Female

General G&G MOSFET

Q: Is your MOSFET light flashing once per interval?
A: Your battery may be low on power.

Q: Is your MOSFET light flashing twice per interval?
A: The gear of the gun is in the wrong position.

G&G G2 MOSFETS

Q: What does it mean when the MOSFET is beeping once per second?
A: Your battery may be low on power.

Q: What does it mean when the MOSFET is beeping continuously?
A: The motor couldn't pull the spring, the gearbox is jammed, or the motor isn't strong enough.

Q: What does it mean when the MOSFET is beeping twice per second?
A: The sector gear is in the wrong position.

Q: How do I check the serial number of my motor?
A: The serial number of your motor can be identified by looking at the series of numbers after "AXX-000," where the "000" is the motor's serial number.

Here is a list of springs that G&G offers and their approximate FPS ratings.

Q: What is the thread pitch for the gas fill port on the SMC 9's magazine?
A: M5 x 0.5mm, same as a Tokyo Marui.

G2H Green ETU

Length: 889.75 mm
Weight: 3275 g
Magazine: 100 Rounds
Inner Barrel: 430 mm

G2 Blue ETU

Length: 809 mm
Weight: 3005 g
Magazine: 90 Rounds
Inner Barrel: 430 mm