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Beeman  Crow magnum .20 inbound

Search eBay for Theoben piston crown. NOT seal! That's another goofy thing Theoben did, name their seals "piston crowns". You will find the wrong one................but.....
Message the seller and ask if or when the Zephyr seals, Oops! I mean Zephyr CROWNS are available again. You might have missed the boat. Seems like they only cast these things on occasion. Yeah, they're cast.
He will ship from UK. NP
Mk1and 2 Eliminators use the Zephyr 👍
Stock up like I did
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Tuning  Umarex M1A1 Thompson Repair

S0rry I have been busy Cybersecurity issues.
Anyway adding wight to the to the bolt... I have no idea how to do that e.g. to what part of the bolt? Are you referring the the small black tube? Please refer to the exploded diagram as to where the "weight" would/should be added. Where would this weight be added specifically.
I am confused and I do not wish to make any permanent changes to the gun. From the beginning with the wood furniture and any modification I have always maintained that the M1A1 would be able to return to it's factory condition with any modification.
Perhaps that is not possible.
From the diagram it looks like 2-02 is your bolt. Please check me on that. That’s what rattles back & forth on full auto (actually, semiauto as well). On the real gun this would be steel and much heavier. And slower. This is where you would add as much lead as you can, any way that you can. Of course it needs to be secure or it’ll shake loose. I’m guessing the Co2 gas port (likely a black plastic thing) is contained in the bolt so you need to see how much space is left over to pack in some weight. As an initial experiment I might pack in some plasticine (since it’s easily removable) and see if it makes any noticeable difference.

Huben  Any issues or problems with Huben gk1 please share your experience

Turns out my local gunsmith didn't install the barrel on my GK1 properly. It's not screwed in far enough, leaving too much space between the barrel and the magazine.

Does anyone know if it's difficult to install and align the barrel on the GK1 yourself? Do I need advanced tools for the alignment?
Only difficult to align if you take out the 2 screws that align barrel to magazine. Otherwise loosen nut, tighten barrel, backoff 1/8, tighten nut without miving barrel, confirm magazine free rotation.

AEA  No more challenger standard????

AEA is weird like that. It is like they only have a finite bandwidth for products. Once they start working on a new product some current product just dies without any notice.
Yeah, I'd like to see about ordering another valve pin and some o-rings just to have them for the future. I haven't found anyone with the pins in stock, but I should call and see if they can order any. Fox Air Power has o-ring seal kits (for a pretty high price), but I guess it might make sense to just bite the bullet and order a set. It would be nice to have a better diagram of the guns with all the parts called out and seal sizes listed.
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Stock in letting.

FYI…old saw blades make great scrapers…they don’t have to be pretty. Cut up an old blade with an angle grinder, drill a hole in the center, run a piece of all thread in there. Chuck it in a drill motor, hold it up to a belt sander until it’s approximately the diameter you’re looking for. A nut between the discs increase cutting efficiency. .040 should be a short amount of time. Good luck. John
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Umarex  Zelos bottle mod

CF bottles off of Amazon are $95-$130 depending on size of bottle.
Tuxing 0.36l was about $80 last year. $109 now and if the additional threatened tariffs are implemented no telling how much they will cost.

Best bargain is the 0.5L which is only $109 right now.

Only *bargains* on AliExpress ship from US stock. 1.1L Acecare for $101. But Tuxing/Alsafe/Acecare dont stock gun size bottles in the US. At some point they will run out of pre-tariff stocks of the larger tanks too.

AEA CENTER PUNCH 18.3GR. 22CAL

No lo sé. Algunos pesos de AEA y JTS son visiblemente indistinguibles, y otros presentan diferencias notables en su forma. JTS también tiene diseños que no son producidos por AEA. Un ejemplo es el semidomo JTS en calibres .22 y .25.

No me sorprendería que estuvieran fabricados en la misma fábrica, pero creo que están diseñados por diferentes diseñadores.
Es muy probable que sea así.

Stock in letting.

Hay man" some great idea's.Well i hate to say this but i have more time then money"i kinda like the socket idea"I got a rifle that shoot so gooood" but it has the plastic stock.When ya a old fart ya just caint wrap yer head around the plastic"I guess their is more then one way to skin a cat?
Oh I get that position, it's my story too. "Of course I know him, he's me...." I recommend some sort of rigid form and sandpaper on plastic. If you break thru you can bondo fill it.

Umarex  Zelos bottle mod

Zelis/M60 bottle conversion is $50 for the adapter plus bottle. If you go with the carbon fiber bottle there should not be a great difference in weight vs the aluminum tubes.

But tariffs are boosting the prices of the carbon fiber bottles just like the guns. Most small CF bottles come from China.

An aluminum bottle will add weight.

Economics it might just be better to stick with the tube and see how the tariff situation works out.

BTW: Zelos is a great choice starting out.
CF bottles off of Amazon are $95-$130 depending on size of bottle.

Umarex  Zelos bottle mod

Zelis/M60 bottle conversion is $50 for the adapter plus bottle. If you go with the carbon fiber bottle there should not be a great difference in weight vs the aluminum tubes.

But tariffs are boosting the prices of the carbon fiber bottles just like the guns. Most small CF bottles come from China.

An aluminum bottle will add weight.

Economics it might just be better to stick with the tube and see how the tariff situation works out.

BTW: Zelos is a great choice starting out.

Accessories  SOLD New Huma Regulators for AEA cheap

So I ordered a challlenger and a challlenger bullpup regulator, I received two HP SS regulators and two bullpup plenums. Part numbers are similar so I guess its a honest mistake, they told me they'd send two more and I can do what I want with the HP SS regulators, but i also got a invoice for another $69 and they never sent anything for a standard challlenger just two bullpup regulators and I put one in my standard challlenger and it seemed fine, not leaking, fired, but it was late and I put it away. Next day im ready to shoot and psi was at 2k so wtf, start degassing and must have got below set pressure and I heard it shoot to the front of the tube and there's nothing holding that end oring in place then it drops back down and I decided im never dealing with that again and don't need a regulator for hunting so im selling everything in pairs, cheap. $70 for the 2 HP SS and $50 for the pair of Challlenger standard bullpup, the used bullpup regulator is obviously missing the bottom oring that got shredded.
Update, HP SS have been sold

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