1. Important Safety Information
WARNING: This air rifle is not a toy. Misuse or careless use may cause serious injury or death. Read all instructions before use. Always wear eye protection. Always treat this air rifle as if it were loaded. Never point at anything you do not intend to shoot. Keep fingers off the trigger until ready to shoot. Keep out of reach of children. Store unloaded and separate from ammunition.
- Always wear safety glasses or goggles when handling or operating the air rifle.
- Ensure the air rifle is unloaded and the safety is engaged before handling or performing maintenance.
- Never shoot at hard surfaces or water, as BBs can ricochet.
- Be aware of your target and what is beyond it.
- Do not alter or modify the air rifle.
- Use only 4.5mm (.177 caliber) steel BBs.
2. Package Contents
The Crosman Full Auto AK1 package typically includes the following items:
- Crosman Full Auto AK1 4.5mm BB Air Rifle
- Magazine (28-round capacity)
- Instruction Manual
- (CO2 cartridges and BBs are sold separately)

Image: The Crosman Full Auto AK1 air rifle, shown from the left side with its magazine inserted.
3. Setup and Loading
3.1. Loading CO2 Cartridges
The Crosman AK1 uses two 12-gram CO2 cartridges for power. These are loaded into the magazine.
- Ensure the air rifle is unloaded and the safety is engaged.
- Remove the magazine from the air rifle by pressing the magazine release button, typically located near the trigger guard.
- Locate the CO2 compartment on the magazine. This usually involves sliding a cover or opening a latch.
- Insert two 12-gram CO2 cartridges into the designated slots, ensuring they are oriented correctly according to the markings.
- Tighten the CO2 piercing screws until the cartridges are firmly seated and pierced. You may hear a small hiss as the seal is made. Do not overtighten.
- Close the CO2 compartment cover securely.

Image: The magazine of the Crosman AK1, showing two 12-gram CO2 cartridges inserted into their compartment.
3.2. Loading BBs
The AK1 magazine has a capacity of 28 rounds of 4.5mm steel BBs.
- With the magazine removed from the air rifle, locate the BB loading port.
- Pull down the BB follower spring until it locks into place, exposing the loading channel.
- Carefully pour 4.5mm (.177 caliber) steel BBs into the loading port. Do not exceed the 28-round capacity.
- Release the BB follower spring, ensuring it holds the BBs securely in place.
- Insert the loaded magazine back into the air rifle until it clicks securely.
4. Operating the Air Rifle
4.1. Safety Selector and Firing Modes
The AK1 features a safety selector switch that also controls the firing mode. Familiarize yourself with its positions:
- SAFE: Engages the safety, preventing the air rifle from firing. Always engage the safety when not actively shooting.
- SEMI-AUTO: Allows for single shots with each pull of the trigger.
- FULL-AUTO: Allows for continuous firing as long as the trigger is held down and ammunition is available. Use with caution and in appropriate environments.
Always ensure the safety is engaged before loading or unloading, and before handling the air rifle for any reason other than firing.
4.2. Aiming and Firing
- With the air rifle loaded and the safety engaged, assume a stable shooting position.
- Point the air rifle at a safe and appropriate target.
- Disengage the safety to the desired firing mode (SEMI-AUTO or FULL-AUTO).
- Align the front and rear iron sights with your target. The AK1 features adjustable iron sights for precision.
- Place your finger on the trigger and apply steady pressure to fire.
- After firing, immediately engage the safety.

Image: The Crosman Full Auto AK1 air rifle, shown from the right side, highlighting the safety selector and trigger area.
5. Maintenance and Storage
5.1. Cleaning
Regular cleaning ensures optimal performance and longevity of your air rifle.
- Barrel: Use a cleaning rod with a patch lightly oiled with silicone oil to clean the barrel. Do not use petroleum-based oils.
- Exterior: Wipe down the exterior surfaces with a soft, damp cloth to remove dirt and debris.
- Moving Parts: Apply a small amount of silicone oil to moving parts and pivot points as needed.
5.2. Storage
Proper storage is essential for safety and preserving the air rifle's condition.
- Always store the air rifle unloaded, with no CO2 cartridges inserted and no BBs in the magazine or chamber.
- Engage the safety mechanism.
- Store the air rifle in a secure location, away from children and unauthorized users.
- Avoid storing in extreme temperatures or high humidity.
6. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Air rifle not firing or low power. | Empty or improperly installed CO2 cartridges. | Replace CO2 cartridges. Ensure they are fully pierced and sealed. |
| BBs not feeding. | Magazine improperly loaded or BBs jammed. | Remove magazine, check BB loading. Ensure BB follower is not stuck. Use only recommended 4.5mm steel BBs. |
| CO2 leaking from magazine. | CO2 seals are worn or damaged. Cartridges not tightened properly. | Ensure CO2 cartridges are tightened correctly. If leak persists, contact Crosman support for seal replacement or magazine repair. |
| Accuracy issues. | Dirty barrel, loose sights, or inconsistent BBs. | Clean the barrel. Check if sights are secure and adjust if necessary. Use high-quality 4.5mm steel BBs. |
7. Specifications
| Model | CAK1 |
| Caliber | 4.5mm (.177 caliber) BB |
| Power Source | Two 12-gram CO2 cartridges |
| Magazine Capacity | 28 rounds |
| Firing Modes | Semi-Auto, Full-Auto |
| Barrel Material | Stainless Steel |
| Frame Material | Metal |
| Weight | 1.99 Pounds (approx. 0.9 kg) |
| Dimensions (L x W x H) | 28"L x 5.5"W x 10"H (approx. 71cm x 14cm x 25cm) |
8. Warranty Information
The Crosman Full Auto AK1 air rifle comes with a 2-Year Manufacturer's Warranty. This warranty covers defects in materials and workmanship under normal use. Please retain your proof of purchase for warranty claims.
For full details regarding warranty terms, conditions, and limitations, please refer to the official Crosman website or contact their customer support directly.
9. Customer Support
If you have any questions, require technical assistance, or need to make a warranty claim, please contact Crosman customer support:
- Website: www.crosman.com (for product registration, FAQs, and contact information)
- Phone: Refer to the Crosman website for the most current contact numbers.
- Email: Refer to the Crosman website for customer service email addresses.
When contacting support, please have your model number (CAK1) and proof of purchase available.