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Discussion Starter · #1 · (Edited)
The Best VSR10 Hopup Chamber (Action Army)

I just received the new Action Army VSR10 chamber and it works a treat.
First impressions are that the finish is excellent and it looks as though it is very durable. Instructions are easy to read and understand.

(Note: I will be comparing the Action Army Chamber to my old chamber that worked really well with no air leaks as it had anti-blowby rings, Dangerworkx Hopup Arm and had the TDC mod. It normally produced about 20-30 fps more than the stock standard VSR chamber)

This new Action Army chamber was able to match the same FPS as my previous kitted out chamber and it does not need anti-blowby rings. I am sure that no air can escape past the bucking or between the air nozzle and the bucking.
To get the bucking into the Action Army Chamber you have to push it in through a hole in the middle of the chamber. This is a very tight fit and I was not able to get the bucking in all the way at first. I then put a little lithium grease on the outside of the bucking and then it slid in perfectly. There was no room at all for air to escape.
It took me about 10 minutes to read the instructions and put the chamber and barrel together. It was pretty easy to do.
I pushed the chamber into my outer barrel and then went to put on the steel mount that holds the chamber in place onto the outer barrel. I found that the old stock standard screws were about 0.5mm to long and so you can either file them down or put in a washer onto the screws. I chose to put a washer onto them.
Once the gun was back together I took it out to my rifle range and tested it (0-1km hour winds). I cocked the gun and fired. The bb's didn't fly very far and so I applied more hopup. The hopup was easy to adjust with an Allen key and should not move out of place at all. So it should be very stable. I fired a few more shots and adjusted the hopup some more. It took me about 4-5 minutes of this to get the hopup set correctly as I done little adjustments each time. Eventually I had the hopup set and the bb was flying straight. No left curve or right curve. The bb's were right on Target.
One other thing to note was that I had absolutely no feeding issues.

I have also owned a couple of PDI chambers for the VSR and the Action Army Chamber is way better. It wins hands down. The PDI chamber can be hard to make fly straight because it has two hopup arms that you need to adjust perfectly while the AA Chamber has only one hopup arm which comes down evenly.
The AA Chamber also uses a stock standard VSR bucking. VSR buckings are better than AEG buckings because the more hopup you apply the more FPS you gain (This is called bb retention). So if you use very heavy weight bb's you will gain energy. With AEG buckings the more hopup you apply the less FPS. So you lose energy. The PDI bucking uses an AEG bucking.
Also the PDI chamber uses rubber o-rings to keep pressure on the hopup arm. These can stretch and move so it is not stable. The Action Army Chamber uses a design which is a like the Top Dead Centre Mod that locks the hopup arm into place. So it will not move. Once it is set you can fire 10,000 rounds and it should still be in the same spot.



You can also use flat hopup spacers on this chamber to create a long flat downward pressure if you choose to but you would have to purchase this separately


Note:This is a flat hopup spacer. The AA VSR10 hopup chamber comes with a round spacer

You can also R-hop the bucking since it is a standard VSR bucking.

I would highly recommend this chamber over any other chamber and think that it would be a good addition to any rifle. Especially if you want the best rifle on the field.



NOTE: One thing to note with the Maple bucking is that it is about half a millimetre shorter than a normal bucking and so I put extra Teflon tape around the inner barrel and then push the black round insert from the AA chamber (this is the black part that goes on the barrel) towards the bucking. The Teflon tape then squishes up and pushes the bucking forward about half a millimetre.
 

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This is very good news! Thanks for putting this together. In my experience, I have had very good results with AA parts, and this just reinforces the idea that AA is a quality brand. This will most likely eventually get stickied, and would love to see some test shooting comparing this and the original hop up to each other (using same barrels, buckings, etc.) I believe you already mentioned you would, and look forward to the results.
 

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another good choice for vsr-10 users :D :D !!!!!
 

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Where can these be purchased? Im having trouble finding a retailer.
I just made a post out of frustration concerning hop up chamber upgrades and behold. Hiding right under my nose. Looks awesome.

I echo the above post. Take my money, where can I get my hands on it?
 

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Hi, which bucking/nub did you use when you ran your test? I have just ordered one of these chambers. I have an r-hop patch installed on my gun so I guess the best nub would be the one in your post?
Thanks
 

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Discussion Starter · #7 ·
Hi, which bucking/nub did you use when you ran your test? I have just ordered one of these chambers. I have an r-hop patch installed on my gun so I guess the best nub would be the one in your post?
Thanks
Yes for R-hop I would advise a rubber spacer like the one in the picture of the first post. I would put a little grease on the rubber spacer between the rubber and the hopup arm. This way it will not get seated into one spot on the hopup arm and should move so that it is flat on your bucking.
 

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Hi, which bucking/nub did you use when you ran your test? I have just ordered one of these chambers. I have an r-hop patch installed on my gun so I guess the best nub would be the one in your post?
Thanks
Hi there,

could you please share where you ordered the chamber? cant find it anywhere.
thanks!
 

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Hi, I ordered mine from phenixairsoft.com. They are based in France and are the only place that I could find with them in stock. I dont know if that helps or not but I think they do worldwide shipping.
 

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Thanks for the link.

Ill wait a little while to see of any other retailers get it in. the shipping is a tad extortionate for my liking. =(
 

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Nice, I'll get this to accompany my r-hop. I'll finally be able to use the m-nub.

Just hope that it will do well with the pdi nozzle/cylinder head.
 

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I guess this item is really new I'm sure it'll show up in the states soon enough.
 

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Discussion Starter · #14 ·
Yesterday I chucked in one of these rubber hopup spacers:

Works really well with the Maple bucking which has a reasonably long nub.
Accuracy is great.
 

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Discussion Starter · #16 ·

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I am not seeing that anywhere on there site. You clearly must have one of very few pre production samples or something.
 

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Discussion Starter · #18 ·
I am not seeing that anywhere on there site. You clearly must have one of very few pre production samples or something.
Sorry, I thought you meant the rubber hopup spacer.
I did get a chamber just as they went on sale. They will be coming out anytime now. It just depends when your local retailer puts in an order for them.
 

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I think you can email to ask WGC to order that product for you.
 
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can you use this with the tdc mod or would it be better to stick with the normal allen key? also would it work with er-hop?
 
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