Air Venturi Avenger sprung a leak

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Jan 14, 2025
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Lower Alabama
I had just got new batteries for the ATN X-sight scope and mounted it to the .25 Avenger yesterday. Everything was going just fine until I got low on pellets. I closed up the shop and came in. This morning I went to the casting shed and dropped a couple hundred pellets. When I got back to the shop I noticed the gauge on the Avenger was on 0. So it connected it to the YH compressor and fired it up. It got to around 4k and wouldn't go any higher. Suspecting the compressor I bled the line and put a terminator in the QD. Fired it back up and it went to 4500 no problem.
When I looked at the Avenger gauge it was already down to 2k. I went to the PA website to order a kit and they are out of stock and research shows me they have been out of stock for quite awhile.
I suppose I should consider myself lucky.. I've had this gun for a few years now and never has one single issue.
So, now what? I don't want to just buy the oring kit.. if I'm going into the gun I want to do a complete rebuild. Besides.. I read that's it typically the poppet that fails.
 
I made an executive decision..
I light of the fact that the AV Avenger complete rebuild kit may be unobtanium for at least the foreseeable future I decided to just order the Capt. O-Ring kit and hope for the best.
I do have large o-ring kits from Harbor Freight in both SAE and Metric but they don't always have what we need. Case in point.. they don't have the right size for the Discovery valve front half that seals the valve to the tube. That's another size I need to order in bulk to have on hand.
Anyways, I'll pull the plenum and main tube off the gun today and have a look at the condition of those rings and see if my kits have the correct sizes. But like I said above... the failed poppet has been a common issue with these guns. If it turns out I have the right o-rings on hand, I will still be a kit ahead.
I'll post my findings here.
 
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Watched a video by Rick Eutsler where he just pulled the tubes off the gun and found hard and bloated out orings. He replaced those two orings and put the gun back together and it held air. Just being curious I pulled the tubes off of mine and found the same hard and blown out orings. I replaced them with a couple I had on hand that looked to be the same size. I put 2k in the gun and it held so I put it back together. But when I took it to 4k I could hear it leaking from those orings.. obviously I put the wrong size in.
So now I'll just wait until the kit comes in and put the correct orings in.
I got an e-mail that the kit had shipped so it shouldn't be but a few days.
 
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BGarney said:
I made an executive decision..
I light of the fact that the AV Avenger complete rebuild kit may be unobtanium for at least the foreseeable future I decided to just order the Capt. O-Ring kit and hope for the best.
I do have large o-ring kits from Harbor Freight in both SAE and Metric but they don't always have what we need. Case in point.. they don't have the right size for the Discovery valve front half that seals the valve to the tube. That's another size I need to order in bulk to have on hand.
Anyways, I'll pull the plenum and main tube off the gun today and have a look at the condition of those rings and see if my kits have the correct sizes. But like I said above... the failed poppet has been a common issue with these guns. If it turns out I have the right o-rings on hand, I will still be a kit ahead.
I'll post my findings here.
Click to expand...
FYI, a Danco #40 oring from Home Depot works like a champ on the Disco valve head, gauge block, AND the fill adapter. The Danco #40 works for a P-Rod, 1701, 1720 valve, fill adapter, and gauge block.
 
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SteveV said:
FYI, a Danco #40 oring from Home Depot works like a champ on the Disco valve head, gauge block, AND the fill adapter. The Danco #40 works for a P-Rod, 1701, 1720 valve, fill adapter, and gauge block.
Click to expand...
Thanks... no HD here but Lowes had them. I placed the order for a 10 pack for $4 and I'll run in and pick them up tomorrow... thanks for the heads up.
 
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SteveV said:
FYI, a Danco #40 oring from Home Depot works like a champ on the Disco valve head, gauge block, AND the fill adapter. The Danco #40 works for a P-Rod, 1701, 1720 valve, fill adapter, and gauge block.
Click to expand...
Made the run to Lowes this morning and picked up the orings... thanks again for the help. Once the woodstove gets the shop warmed up I'll get out there and put them in Scary Mary Green.

20241225_105153.jpg
 
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Well, idle minds.. I got back out in the shop this morning and after I got the stove cooking I started gathering up stuff to put the 3622 look alike back together. Only now it's a 3627 look alike ;)
I don't know about y'all but taking these things apart and putting back together is just as much fun as shooting them, for me anyways.

First of all... it's in here someplace... what a mess !

20250119_092727.jpg
 
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BGarney said:
Well, idle minds.. I got back out in the shop this morning and after I got the stove cooking I started gathering up stuff to put the 3622 look alike back together. Only now it's a 3627 look alike ;)
I don't know about y'all but taking these things apart and putting back together is just as much fun as shooting them, for me anyways.

First of all... it's in here someplace... what a mess !

View attachment 530590
Click to expand...
I think I may have discovered where the elf on the shelf goes in the off season. Every morning I walk into my shop and it looks like this. Ole Mr. Kringle need to tether his dog. :confused:

20250119_092727.jpg
 
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Wife approved the acquisition of a new gun with a $300 spending cap. I just can't find anything new that I don't already have the niches covered with what I have.
I've always said that I didn't care for tactical looking guns but the NOTOS changed my mind on that line of thinking... love that little gun. Since I've had it I keep finding myself looking at the Buck Rail Tactical conversion kit for the Avenger. I mean we all know, at least I do, that the plastic on the Avenger does the gun no justice at all and I think the wood adds more weight to the gun than it's worth not being nice walnut and all.
This morning I had it in and out of my cart more times than care to count. So, went went to the local grocer to grab a few things and on the way back I decided to jump in and order it.
$153 to my door and I was able to only spend half of the budget. Win win.
The other nice thing is that the upgrade it completely reversable. I can add that option as a perk if I ever decide to sell/trade the gun.
 
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There is a new aftermarket high capacity magazine source on the scene.. Big Air Precision.
https://www.bigairprecision.com/
Troy is a great guy to deal with and makes quality stuff right here in the US. I worked with him on designing and producing High Cap mags for the Xisico Sentry.
If he don't already have what you need he is up for the challenge of designing and making it.
I have 7 of his mags for the Avenger .25

20241104_073525.jpg
 
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Bummer...
I got the Buck Rail conversion kit today and started to assemble the gun.. wait, something don't look right here. No stock tube.. I wondered if it had to be ordered separately? I went back to the site and looked. Yes, you can order the tube only or you can order the tube and stock in your choice of colors. But nowhere did it say that the stock did not come with the tube.
So I called and spoke with Julie.. nice girl. She looked up my order and immediately took the blame. She said she was the one that packed the order and forgot to put it in the box. She said she would get one right out to me. 2 minutes after I hung up the phone I got email confirmation.
 
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BGarney said:
There is a new aftermarket high capacity magazine source on the scene.. Big Air Precision.
https://www.bigairprecision.com/
Troy is a great guy to deal with and makes quality stuff right here in the US. I worked with him on designing and producing High Cap mags for the Xisico Sentry.
If he don't already have what you need he is up for the challenge of designing and making it.
I have 7 of his mags for the Avenger .25

View attachment 531824
Click to expand...

+1 on Big Air Precision. Troy is extremely responsive. Free shipping and no tax on great products. I picked up three mags and a moderator for my Notos.
 
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