1. Introduction and Overview
The Umarex AER16 is an electric-powered, full-auto steel BB airgun designed for recreational shooting. This manual provides essential information for the safe and proper operation, maintenance, and troubleshooting of your AER16 air rifle.

Figure 1: Umarex AER16 Air Rifle, main view.
Key Features:
- Electric-powered full-auto steel BB airgun.
- Launches up to 650 rounds (10-12 magazines) on a full battery charge.
- Features a drop-free magazine with a 55-round capacity.
- Shoots .177 caliber steel BBs at up to 430 feet per second (FPS).
- Equipped with a smart LED MOSFET for precise control and performance.
- Easily switch between safe, semi-auto, and full-auto firing modes.
- Offers multiple mounting options for accessories.
- Includes adjustable and removable flip-up sights, a 650-round speedloader, charging cable, and an 11.1V 1100 mAh Li-Po battery.
- Compatible with spare magazine part number: 2252127.
Product Overview Video:
Video 1: An overview of the Umarex AER16 air rifle, highlighting its key features and operation.
2. Safety Information
WARNING: This is not a toy. Misuse may cause serious injury or death. Always handle with extreme caution.
Proposition 65 Warning: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.
- Always wear eye protection when handling or operating the air rifle.
- Treat every airgun as if it were loaded.
- Never point the air rifle at anything you do not intend to shoot.
- Keep your finger off the trigger until you are ready to fire.
- Be sure of your target and what is beyond it.
- Store the air rifle unloaded and separate from ammunition.
- Keep out of reach of children.
- Read and understand all instructions before use.
3. Package Contents
Upon opening the package, verify that all components are present and undamaged:
- Umarex AER16 Electric-Powered Full Auto .177 Caliber BB Gun Air Rifle
- 55-round drop-free magazine
- 650-round speedloader
- 11.1V 1100 mAh Li-Po battery
- Battery charging cable
- Adjustable and removable flip-up sights

Figure 2: Front view of the Umarex AER16 product packaging.
4. Setup
4.1 Battery Charging and Installation
The AER16 is powered by an 11.1V 1100 mAh Li-Po battery. Ensure the battery is fully charged before first use.
- Connect the provided charging cable to the battery and a suitable USB power source.
- Allow the battery to charge completely. Refer to the charger's indicator for charging status.
- Locate the battery compartment, typically within the buttstock or handguard.
- Carefully insert the charged battery into the compartment and connect it to the air rifle's power connector.
- Securely close the battery compartment.

Figure 3: Front view of the AER16 air rifle, showing the barrel and handguard.
4.2 Loading BBs
The AER16 uses .177 caliber steel BBs and comes with a 55-round drop-free magazine and a 650-round speedloader.
- Remove the magazine from the air rifle by pressing the magazine release button.
- Use the included speedloader to fill the magazine with .177 caliber steel BBs. Ensure BBs are loaded correctly to prevent jams.
- Insert the loaded magazine firmly into the magazine well until it clicks into place.

Figure 4: Close-up view of the AER16's receiver and magazine.

Figure 5: The 55-round drop-free magazine for the AER16.
4.3 Adjusting Buttstock
The AER16 features an adjustable buttstock for comfortable shooting positions.
- Locate the adjustment lever on the underside of the buttstock.
- Press the lever and slide the buttstock to your desired length.
- Release the lever to lock the buttstock in position.

Figure 6: Rear view of the AER16, showing the adjustable buttstock.
4.4 Sights and Accessories
The air rifle includes adjustable and removable flip-up sights and offers multiple mounting options for additional accessories on its rail system.

Figure 7: Side view of the AER16, illustrating the rail system for accessories.
5. Operating Instructions
5.1 Safety Selector
The AER16 features a safety selector with three positions: SAFE, SEMI, and AUTO.
- SAFE: Prevents the air rifle from firing. Always engage the safety when not actively shooting.
- SEMI: Allows for single shots with each pull of the trigger.
- AUTO: Enables full-automatic firing, continuously shooting as long as the trigger is held down and ammunition is available.

Figure 8: Close-up of the safety selector on the AER16.
5.2 Firing the Air Rifle
- Ensure the magazine is loaded and properly inserted.
- Point the air rifle in a safe direction towards your target.
- Move the safety selector to the desired firing mode (SEMI or AUTO).
- Place your finger on the trigger and pull to fire.
- After firing, always return the safety selector to the SAFE position.
6. Maintenance
Regular maintenance ensures the longevity and optimal performance of your Umarex AER16 air rifle.
6.1 Cleaning
- Wipe down the exterior of the air rifle with a clean, dry cloth after each use to remove dirt and moisture.
- Periodically clean the barrel using a .177 caliber cleaning rod and patches.
- Do not use petroleum-based lubricants on plastic or rubber components.
6.2 Battery Care
- Always use the provided charging cable or a compatible Li-Po charger.
- Do not overcharge or completely discharge the battery.
- Store the battery in a cool, dry place away from direct sunlight and extreme temperatures.
- If storing for extended periods, charge the battery to approximately 50% capacity.
7. Troubleshooting
This section addresses common issues you might encounter with your AER16 air rifle.
| Problem | Possible Cause | Solution |
|---|---|---|
| Air rifle does not fire. | Battery is not charged or connected; Safety is engaged; Magazine is empty or not properly inserted. | Charge and connect battery; Disengage safety; Load and properly insert magazine. |
| Low FPS or inconsistent shots. | Low battery charge; Incorrect BBs used; Barrel obstruction. | Recharge battery; Use recommended .177 steel BBs; Clean barrel. |
| BBs not feeding. | Magazine improperly loaded or damaged; Incorrect BB size. | Reload magazine correctly; Inspect magazine for damage; Ensure .177 steel BBs are used. |
If the issue persists after attempting these solutions, please contact Umarex customer support.
8. Specifications
| Feature | Detail |
|---|---|
| Brand | Umarex |
| Model Name | AER16 |
| Part Number | 2252126 |
| UPC | 723364521263 |
| Caliber | .177 Caliber Steel BBs |
| Max FPS | Up to 430 FPS |
| Power Type | Battery, Electric (AEG) |
| Battery | 11.1V 1100 mAh Li-Po (Included) |
| Magazine Capacity | 55 Rounds |
| Total Rounds (on full charge) | Up to 650 Rounds (approx. 10-12 mags) |
| Firing Modes | Safe, Semi-Auto, Full-Auto |
| Barrel Material | Metal |
| Frame Material | Polymer |
| Color | Black |
| Item Package Dimensions | 34.02 x 10.71 x 3.86 inches |
| Package Weight | 3.24 Kilograms |
| Suggested Users | Unisex-adult |
| Date First Available | January 23, 2024 |

Figure 9: Back view of the AER16 product packaging, showing UPC and manufacturer details.
9. Warranty and Support
The Umarex AER16 Electric-Powered Full Auto .177 Caliber BB Gun Air Rifle is covered by a manufacturer's warranty.
For warranty claims, technical support, or additional information, please visit the official Umarex USA website or contact their customer service department.
Official Umarex USA Store: Umarex USA Store on Amazon
Manufacturer Website: umarexairguns.com