FX M4 impact issues

Has anyone had issues with there M4? I had to send my M4 back today with believed valve issues because fps is starting low and rasing up over about 40 shot string until leveling out! Utah airguns customer service is great and hassle free. But insight needed
Sounds like reg creep symptoms and the valve is closing itself. How many fps spread are we talking? If they shipped with a little problem-solution sheet to help people watch some things it would save them and their distributors some headaches. The manual you get for technical subjects (at least the m3 impact era) is basically "you spent enough money we think you can handle it".

Watch the m5 bring back dual regs 🤣. They should just sub out the regs to huma. It took a little while and running my gun at 165 bar for a lot of rounds before my regulator started to creep on a progressively worse fashion. I put humas on it and it's rock solid now. They also used to tell you to clean some stuff when when you took ownership of a new gun, knowing this I did with the dreamline I just got and the liner was filthy.
 
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There have been plenty and that’s why I didn’t recommend one in your other topic.
Gezz my man should helped a brother out!! I live close to hw gun place! Over in minor hill tn. Will see in a couple weeks what they come up with. I cleaned it and had to adjust my zero every hunt! I original just wanted a simple ghost but lesson learned. I got out mk2 because of similar issues. I don't utah policy about changing gun to another platform but they assured me they would have it fixed and I'd fall in love with the impact again. My dreamline classic is my best gun so far!
 
Gezz my man should helped a brother out!! I live close to hw gun place! Over in minor hill tn. Will see in a couple weeks what they come up with. I cleaned it and had to adjust my zero every hunt! I original just wanted a simple ghost but lesson learned. I got out mk2 because of similar issues. I don't utah policy about changing gun to another platform but they assured me they would have it fixed and I'd fall in love with the impact again. My dreamline classic is my best gun so far!
Didn’t you have a little wood bullpup with a bottle? It was something good like a Vulcan or something.
 
I've had several I can't remember. I had a vulcan 3 .25 at one point. But .25cal is to rich for my blood
That’s it. I remember thinking he finally found a keeper. A .177 can be a little more tricky but great once you have one that’s accurate, does what it’s supposed to and you never have to tear down a brand new gun. Good luck. If you get it back and it behaves, don’t brag about it. Impacts make you pay for bragging about them by immediately developing a problem.
 
Search function works wonders ;)

 
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Search function works wonders ;)

I don't have 10 shoots everytime for hunting🤦‍♂️
 
That’s it. I remember thinking he finally found a keeper. A .177 can be a little more tricky but great once you have one that’s accurate, does what it’s supposed to and you never have to tear down a brand new gun. Good luck. If you get it back and it behaves, don’t brag about it. Impacts make you pay for bragging about them by immediately developing a problem.
Agreed brother! Im just a airgunner searching for the James bond golden gun that will forever be in my arsenal!! The redwolf was amazing but way long!
 
I don't have 10 shoots everytime for hunting🤦‍♂️
Yeah it sucks… seems like UA replaced valve rod and plenum housing on some shipped to them with the same issue, apparently with some success. Now idea how long the solution is lasting though… I dealt with it myself and got mubhauer’s part plus different o rings, now it’s fine for probably 2k shots so far. First shot still a little slower but that’s the reg. And only 10ish fps so not really affecting poi.
 
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Yeah it sucks… seems like UA replaced valve rod and plenum housing on some shipped to them with the same issue, apparently with some success. Now idea how long the solution is lasting though… I dealt with it myself and got mubhauer’s part plus different o rings, now it’s fine for probably 2k shots so far. First shot still a little slower but that’s the reg. And only 10ish fps so not really affecting poi.
I wonder why they changed the plenum? This also sounds like something their little function check should've caught.
 
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Yeah it sucks… seems like UA replaced valve rod and plenum housing on some shipped to them with the same issue, apparently with some success. Now idea how long the solution is lasting though… I dealt with it myself and got mubhauer’s part plus different o rings, now it’s fine for probably 2k shots so far. First shot still a little slower but that’s the reg. And only 10ish fps so not really affecting poi.
So I should have waited a year before trying this platform! Gezz should have bought a brk ghost or hw hunter or evol! Well thats life!
 
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My impact took some doing to get there as a forever keeper too. I changed a lot on it, regulator changes if its got a delrin piston amp are nearly mandatory upgrades imo. And a digital guage on the plenum side. It's a cool platform if you're a spaz like me and change its tune and ammo all the time.
I feel like I got some work to do. Idk if I want to upgrade a new gun that should be awesome out the box! But i have no doubt there are some out the box special guns out there! My wife would blow a gasket if I start buying parts for this new gun lol. Might have to cash out some of my XRP crypto position for these upgrades