Tuning M3 leak - which oring to check

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M0ist0ne

M0ist0ne

Member
Aug 21, 2020
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MN, United States
Ok, searched, can't find it...what oring do I need to check for a leak from the weep hole on the bottle connector. 

Replaced the inner bottle neck oring, 1st reg screw oring, the steel/rubber looks ok. Only found out it was coming from the weep hole when I removed my rail to inspect steel/rubber washer. 

Pic below of the culprit hole on the bottle screw--really trying to keep liking my M3 😂

20210614_213407.1623727243.jpg



 
What's with the air leaking on M3s? Seen more than one thread this week, should I worry about my order?!
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Yeah...I still have MK2 as well. Wish I never would have sold my compact MK2 though. 

The M3 is more an "everyone's" impact, imo. Wished they didn't change the valve setup. Although it does make it easier for slugs, big fps change with the valve now. I have a .30 MK2 that is still my main bench gun. 
 
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The leak is probably the AMP regulator. Here is a AMP reg rebuild video. Hope it helps.



https://www.youtube.com/watch?v=TNPiYHiA4z0

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Thanks, I replaced the little reg screw oring. Looks like FX went overboard with the loctite on the reg assembly so I'll give it another go to wrestle the whole assembly off today before I say f it and send it in.
 
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It is either the 4 x 1.5 NBR 70 on the piston or the one inside the bottle adapter which is the same size.

Give us a call at FX USA 866-639-0772 if you need assistance.
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Thanks for the response. I had been chatting with Melissa, I think I'll send it in. That sucker is loc-tited on there hard and I'm not looking to mar up my month old rifle...unless you have any other suggestions to remove it. 
 
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