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Discussion Starter #1 (Edited)
beryl1.jpg beryl2.jpg beryl3.jpg

Posted this over on the other forum, but figured I would reach out here as well for some insight. Recently purchased another GenIII Archer off GB and picked it up today. Was sold as a "gunsmith special" due to the fact that it did not run consistently. The previous owner had the mag well and trunnion hogged out and installed a CANIS M4 adapter. Radom mags lock in, but wobble like crazy. Looking for options. Can the well and trunnion be built up with weld and remachined, or am I asking for trouble. Will post up some pics when I have a chance, but any help/suggestions are appreciated.
 

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I don't think you'll find anyone that thinks welding on the lugs is a good idea, and building the edges of the magazine well back up is gonna be a royal pain. You might be best served by rebuilding on a new receiver and front trunnion--you could probably use the trunnion from a tantal or ak74. Post some pics so people can get a better idea of how bad it is, but from the way you're describing it it sounds pretty gnarly.
 

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I don't think you'll find anyone that thinks welding on the lugs is a good idea, and building the edges of the magazine well back up is gonna be a royal pain. Y.
I was going to say same thing. welding will anneal that area of the trunnion removing toughness and hardness. i'da say this is no go. personally i wouldn't risk it if i was going to shoot the gun.
if wobble bothers you or the gun, maybe instead built up material on couple of mags in the portion that interacts with trunnion where metal was removed. easy enough work-around compared to welding trunnion.
 

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While you are talking with Ted maybe he has a FB factory STANAG magwell adapter? He was working with FB for a few years. I think the Beryl with the STANAG adapter might have been one of his ideas. If you got lemons might as well try and make lemonade.
 

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Discussion Starter #10
OMG, Whoever did that should have their hands crushed with hammer & their dremel taken away.
I knew it had some work done, but, yeah...it was a butchered. I'm sure I can get it to run with the mag adapter, but, aesthetically, its going to bother me. Initially though, may put in welds, re-machine, and then reheat treat. But not sure if that will work. In the least it needs a new receiver. Childers may be getting a call shortly.
 

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The only semi-easy fix I can think of is to add some beads in the receiver in the crucial areas like the mag stabilizers on the rails and the dimples. Is it side to side wobble or front to back? Side to side would be much easier to fix.
 

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Discussion Starter #12 (Edited)
Predominantly, side to side and sight with just a tiny forward and back movement, almost negligible. The side to side play is at an angle to the parallel of the receiver. Not sure if the I picture shows well, but the area on the trunnion the mag locks onto was dremeled as well. When I looked at it a few minutes ago...looks like the dremel work is only on the bottom of the mag locking position. There is some work to the bullet guide area as well. Will do a full disassembly when I have a moment and show some more pictures.
 

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Predominantly, side to side and sight with just a tiny forward and back movement, almost negligible. The side to side play is at an angle to the parallel of the receiver. Not sure if the I picture shows well, but the area on the trunnion the mag locks onto was dremeled as well. When I looked at it a few minutes ago...looks like the dremel work is only on the bottom of the mag locking position. There is some work to the bullet guide area as well. Will do a full disassembly when I have a moment and show some more pictures.
I can see that now. I would try what I said and build up the stabilizers and dimples a little to see if it helps. It can't hurt at this point. If the front locking slot on the trunnion isn't screwed up, you can always work with the latch too and make sure it sits right. I saw you were having feed issues too. If you can insert a mag and get a photo of it from the top of the receiver so we can see how it sits, it'll tell us if it's salvageable. If the mag height isn't right, there are only a few things that can fix that. The bullet guide could be the culprit too. More photos will definitely help. Just don't have the trunnion welded like everyone else said. You'll be looking at stress fractures really fast in the steel if you do.
 

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Discussion Starter #14
I can see that now. I would try what I said and build up the stabilizers and dimples a little to see if it helps. It can't hurt at this point. If the front locking slot on the trunnion isn't screwed up, you can always work with the latch too and make sure it sits right. I saw you were having feed issues too. If you can insert a mag and get a photo of it from the top of the receiver so we can see how it sits, it'll tell us if it's salvageable. If the mag height isn't right, there are only a few things that can fix that. The bullet guide could be the culprit too. More photos will definitely help. Just don't have the trunnion welded like everyone else said. You'll be looking at stress fractures really fast in the steel if you do.
Will take some more photos this evening and post up. If welding is a no ho, next option is a donor Tantal trunnion. I know APEX has them, unless I find one here on the forum.
 

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Mag alignment looks okay, but I can see where they hogged out the trunnion and it makes me sad. Adding material on the dimples and stabilizers would likely help and I'd be willing to bet that bullet guide may be part of the issue.
 

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Discussion Starter #17
Mag alignment looks okay, but I can see where they hogged out the trunnion and it makes me sad. Adding material on the dimples and stabilizers would likely help and I'd be willing to bet that bullet guide may be part of the issue.
I think Im settled at replacing the trunnion and receiver with a Childers. Have a Tantal front trunnion inbound. I figure I can change out the bullet guide in the Tantal and will be good to go. Will take a little cash, and wont be a original build, but, I have one sitting in the safe in excellent condition, and not fired much, so this one will be the range toy.
 

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Discussion Starter #18
Update. Got the rifle back from Two Rivers. Amazing job Tim did on it. Took shooting last week. 80 rounds down the pipe not one issue. 20190406_075450.jpg 20190406_075440.jpg
 
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