Nice work and great details/information, thanks for sharing 
Surely it has to be sealsš¤
Been looking for an oāring nozzle for these but no luck so farš
Let me know if you find anything. The piston seal and the cyclinder seal leave some to be desired.
Evidently my home made green oring isnt cutting it
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Just wrapping the cyl head oring area with plumbers tape till itās a real tight fit usually worksš¤
Nozzle is another thing altogether 
Good day to all.
I just received my Quasar via B709 permit.
Can I ask if any is experiencing gels dribbling out on single fire at 7.4v. Two batteries that came with it have been tested.
At 11.1v I have no issue on single or full auto.
-z
The stock barrel is oversized causing it to not hold the ball in place. Pretty sure thats what caused my double feeds and dribble. Change the barrel to a 7.5mm alloy. Hopfully youll get lucky and it wont be glued in.
Metal gears arrived last week, not sure when Iāll get around to actually putting them in as still too shaky at the momentš¤
Would be nice if we could get a metal ladder piston as well, I see this as the next failure point with any spring upgradeš
I believe X-Force were getting in the gearboxes with metal internals, whether they have metal ladders of course is another thing. I think they were waiting on China clearance 
Gonna keep searching down the Well airsoft mp7 route for now.
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Please post if you find anything. I cannot locate a better piston/ladder.
The lehui mp9 cylinder set up looks very similar. Ordered this to see. Its too funky a design to not be the same.
Metal gears doing fine so far. Had maybe 1000 balls through it, so not much. But still ticking over without any new noises.
Watch the pinion/spur mesh. There isnt much wiggle room between slipping and grinding.
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Thank you Chapinb. In reading your earlier posts, I can now see the connection you made to the barrel ID.
I intend to do a barrel swap over the weekend with an offcut of 7.5mm alloy that I have from a prior mod.
I also read about your barrel being super glued into the T piece and how much of pain it was to remove. Can I ask what the best trick you found in the end to remove it?
Heat didnt help, at least not without melting the t. I put some acetone (nail polish remover) on it then slowly wedged a small flat head screwdriver between the barrel and t, giving it a twist with plyers every now and again. Go slow, dont want to break the t. It wasnt pretty. But worked.
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Thank you Chapinb.
I opened it up and low and behold the barrel was super glued.
Given your difficulty, my first reaction was that I was going to ask a 3D printing company that I have had good experiences with in Brisbane to print a T-Piece in nylon.
In the end I was able to dislodge the barrel from the t-piece by heating the barrel directly with a soldering iron. It seemed to break down the bond of the superglue and came out with a little effort.
So no need for the 3D printers to work out the geometry and print, but I did see that they are doing parts in carbon fibre. I imagine nylon would still be best for a t-piece, but some carbon fibre would be good for other parts.
-Z
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Never thought about heating with a soldering iron. I like that idea.
I printed a nylon hopup recently thats untested, but hopful it works well.
I just bought one via amazon, it not arrived yet. How can i do upgrades on this blaster? Can somebody make a tutorial video for it? Im a spanish speaker so i dont understand well what all of you sre saying. I cant wait to get this blaster on my hands! But i dont want to be dissapointed of it. It is worth value Or trash? I want to put like a silencer on it or something like the other guy posted because it looks incredible and the performance can improve too, and i dont understand the problem with the barrel, can someone explain it? What can i do? I payed a lot for this and it is my first gel blaster everā¦
Wonāt get a response like that buddyā¦
What do you mean? Im not joking im seious i just bought it on amazon after being scammed in other shop
Paint it completely black
I see English isnāt your primary language but itās coming off a bit demanding, to join a forum and almost immediately make requests for something thatās not really a simple task isnāt exactly welcoming.
Not trying to be mean or anything but keep in mind this is a hobby for most of us here so not everyone here is able to respond immediately or with what youāre after, especially when itās been months since it was last active.
Thereās already plenty of information posted here about what can be done about its performance.
Heās from another country @DChapo chill out and english isnāt his primary language.
Zhenduou may ship blasters to you. Iām not sure . They are China company where they are all made.
Amazon doesenāt sound good to me personally for blaster buying. Zendhou have ripped me in the past so make sure your payment is secure.
Pretty sure I made it obvious Iām aware English isnāt their first language, considering they even said they speak Spanish, but that wasnāt what I was commenting onā¦