I have a 25 cal, M3, 700 mm barrel. I am hearing a pop sound from the gun as it is fired. It is loudest in my right ear near the breach. I replaced the breach o ring but nothing changed. I can remove the magazine, cock the rifle and fire it while placing my finger over silver disk below the pellet probe and there is a small pressure change coming from there as well around the pellet probe as the gun is fired. Is this normal? I am at 90 bars on second reg and power wheel 10 shooting JSB 34 grains @ 800 FPS. I have tuned the gun up to about 930FPS and any where in-between. It gets louder as the FPS goes up. Not sure I am being a little sensitive or its the gun, but don't remember it sounding like this in the beginning. Can anyone give advise.
Impact M3 leak question
- Thread starter Stealth
- Start date
Sounds like the pellet probe is out of alignment, or the probe is loose ,check the set screw that holds the probe ?
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The silver disc you speak of is the valve.
If it is not the O-ring inside of the barrel it may be a faulty valvepin o-ring.
It is a very small O-ring and you have to tear your gun down quite a bit to get at it. If you are not comfortable with that contact FX for some warranty werq.
E105 19761 O-ring 2,2x1 NBR 70
https://fxairguns.com/wp-content/uploads/2021/04/F10370-Impact-M3-1.pdf
If it is not the O-ring inside of the barrel it may be a faulty valvepin o-ring.
It is a very small O-ring and you have to tear your gun down quite a bit to get at it. If you are not comfortable with that contact FX for some warranty werq.
E105 19761 O-ring 2,2x1 NBR 70
https://fxairguns.com/wp-content/uploads/2021/04/F10370-Impact-M3-1.pdf
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If you leave the magazine out, fire the gun with your finger near the valve and feel the air coming from the valve then you may need to contact FX.
If you feel it is coming from the pellet probe then replace the O-ring in the barrel again and check your probe for defects or burrs that might damage the O-ring.
I managed to damage that tiny O-ring, in the valve once when I was putting my gun back together, but did not notice until I shot it. I had to tear it down for a second time to replace the O-ring.
If you feel it is coming from the pellet probe then replace the O-ring in the barrel again and check your probe for defects or burrs that might damage the O-ring.
I managed to damage that tiny O-ring, in the valve once when I was putting my gun back together, but did not notice until I shot it. I had to tear it down for a second time to replace the O-ring.
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If you are not confident in taking it down. Send it to FX.
But if you are willing to take it down. It does not need to be taken all the way down. you just need to take off the rear block and valve housing. Rifle need to be degas.
But if you are willing to take it down. It does not need to be taken all the way down. you just need to take off the rear block and valve housing. Rifle need to be degas.
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