This magazine fits the LM4 PTR Series, including the LM4 KR Series. It holds 40 rounds and is manufactured and assembled to the highest standards. The magazines, like the weapons they are made for, have a wide availability of replacement wear-and-tear parts available, and feature realistic round capacities to better suit training scenarios.
Inspect magazine before each use and before filling with Green Gas. If Gas is still present in the magazine, release the gas by pressing the release valve located at the top rear of the magazine. Be advised, cold pressurized gas will rapidly escape from the top of the magazine. Stay clear from any exiting gas.
- Wear proper safety equipment when troubleshooting or participating in airsoft activities
- Ensure feed lips are intact and free of cracks or deformation.
- Inspect the center of the fill valve for a small o-ring before filling.
- Depress and release the release valve and verify the button freely opens and closes.
- Apply a drop of silicone oil to the top surfaces of the magazine main seal just behind the feed lips, this promotes a proper seal between the magazine and BCG.
- Replace parts as necessary.
2.   Ensure feed lips are intact and free of cracks or deformation.
3.      Inspect the center of the fill valve for a small o-ring before filling.
4.      Depress and release the release valve and verify the button freely opens and closes.
5.      Apply a drop of silicone oil to the top surfaces of the magazine main seal just behind the feed lips, this promotes a proper seal between the magazine and BCG.
6.      Replace parts as necessary.
Pro Tips:
–         Refrain from shaking the can prior to filling.
–         Refrain from shaking the can prior to filling.
–     Avoid dropping the magazine. Sudden impact with a hard surface may causedamage to the magazine.
–         When filling Green Gas into a GBB magazine, ensure the magazine is upside down (floor plate up) and the Green Gas can is upside down and vertical with the fill needle inserted downward.
–         30-40 seconds of gas fill may be necessary to get a magazine full of gas. You can also put your ear to the magazine while filling, audibly listen for a faint hissing while the magazine is being filled.
–         Prime the magazine by following this tutorial video: https://youtu.be/ENaN5XEGlhw . Priming the magazine involves all the same steps for filling with the addition of pressing the release valve when initially inserting the Green Gas fill needle. This should be done periodically to reduce air pockets/bubbles from forming inside the magazine.
–         The magazine may become cold after shooting, please allow the magazine to return to room temperature for best results – putting them into pouches or a cargo pocket usually helps with normalizing the magazines temperature.
–         Store Green Gas magazines in a cool, dry area and never leave magazines in direct sunlight.
–         When filling Green Gas into a GBB magazine, ensure the magazine is upside down (floor plate up) and the Green Gas can is upside down and vertical with the fill needle inserted downward.
–         30-40 seconds of gas fill may be necessary to get a magazine full of gas. You can also put your ear to the magazine while filling, audibly listen for a faint hissing while the magazine is being filled.
–         Prime the magazine by following this tutorial video: https://youtu.be/ENaN5XEGlhw . Priming the magazine involves all the same steps for filling with the addition of pressing the release valve when initially inserting the Green Gas fill needle. This should be done periodically to reduce air pockets/bubbles from forming inside the magazine.
–         The magazine may become cold after shooting, please allow the magazine to return to room temperature for best results – putting them into pouches or a cargo pocket usually helps with normalizing the magazines temperature.
–         Store Green Gas magazines in a cool, dry area and never leave magazines in direct sunlight.