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Salt raifus and raifu accessories
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There's no discharge in the war!

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b83e0a  No.689019

I've read info that an experimental 15/20 round magazine was tested for the AVT-40 as well as a drum mag (pictured). I've also herd of mods where you can convert Lahti-Saloranta M/26 or Bren mags to work in them.

I'm also curious about how the AVT-40s trigger group works, but don't know the legality behind sharing that knowledge. I don't think it'd be bad as SVT to AVT conversion is equivalent to M1 to M2 carbine conversion and it's easy to find documents on those things. I've also found this Russian thread that I've been reading through google translate: https://guns.allzip.org/topic/36/417394.html

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8712f7  No.689087

File: fc89d2994ce736e⋯.jpg (134.85 KB, 1273x887, 1273:887, 1461513581429.jpg)

According to that thread technically no new parts are needed, and if you modify the distance the trigger has to travel somehow you can make it go full fun. The trigger group is otherwise identical.

Also according to the thread the basic SVT-40 is not built to withstand full fun without strengthening basically every structural part of the gun, including the furniture. And let me tell you a thing about soviet engineering: if the guns werent exploding into peoples faces when in full auto, they wouldnt have made a specialized variant.

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b83e0a  No.689131

>>689087

Hmm, is there any documentation of exact part failure of the AVT. Most translated documents I've read Indicate the barrel wears out fast, stock breaks (though this is mainly resolved with the thicker AVT stocks) and the receiver collapses, but don't mentions anything about the bolt group or any other action components.

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8712f7  No.689158

>>689131

No idea about documentation, but the thread you posted specifically mentions the internals of the gun not being able to withstand automatic fire. The SVT was originally designed as a semi-automatic rifle, the AVT being a minor last ditch type modification to counter the lack of automatic rifles in the field, which was so unreliable that after production ceased, existing AVTs were converted back to semi-automatic and re-issued as sturdier SVTs. Theres a pic in that thread that I will not repost for several reasons of which all are legal, which shows a garage machined copy of the part that makes the gun explode in your face.

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b83e0a  No.689166

>>689158

Oh shit! I see what you mean. I do wonder what parts break though. Common action malfunctions (at least the ones that can be found on the internet) the SVT can be prone to includes failure to extract/eject, slam firing/firing pin problems and light primer strikes. The Finns also noted some issues with the gun here: https://www.jaegerplatoon.net/RIFLES4.htm

A guy called SitsinShadow on youtube has a video of an AVT-40. Some of his comments make light of a weak receiver and barrel but nothing else:

"They are the size of the gas port opening in millimeters. You adjust them with a special five sided wrench, and it adjust the amount of gas that is fed to the piston cup, and thereby changes the amount of energy available to operate the rifle. Too little and she won't cycle, too much and you'll beat the somewhat fragile, and in this case, very expensive receiver all to pieces."

"Correct, the receivers will not last long running like that. The gun is simply built too lightly."

"I think the Russians thought similarly, in fact depending on the source, it seems most were, but were only allowed to be used in FA on command. The SVT could survive limited use in that manner, but the receivers can't take the abuse long term. The BAR could take it, given the greater weight, especially in the receiver area."

"It's amazing how light it is, compared to a Garand, or even any of the bolt action guns of WW2. What compounds it is the locking mechanism. The tilting bolt mechanism of the SVT/AVT results in the stress of firing being distributed along the rather narrow and not very tall receiver walls, as opposed to being distributed around the ring of a opposed bolt lockup mechanism like a Garard, or Mosin Nagant. It's no wonder that Kalashnikov went with a different approach on the AK."

"It's a handy rifle as well, nice and light, and can pack a serious punch. I wish I could get an operable 20 round magazine for it though. Then again, the barrel would likely die a quick death that way… I have a few spares, but changing them is no easy task."

Here the link to the vid: https://www.youtube.com/watch?v=CVmCONHGPQk

He also mentions he tried getting the LS/26 magazines working in the gun but didn't have good results.

In addition he pointed to the following thread in one of his comments: https://forums.gunboards.com/showthread.php?60449-Former-AVT40-s-Is-there-a-specific-receiver-marking&p=461509#post461509

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8712f7  No.689171

>>689166

The reciever is supposedly VERY weak and prone to outright breaking.

>"I think the Russians thought similarly, in fact depending on the source, it seems most were, but were only allowed to be used in FA on command.

Thats correct, its in the government issued rifle manual that the gun is to be used in full fun only on command.

So basically what youre looking at when you go full fun for too long is not that you gonna get malfunctions in the action, its that youre gonna get an expensive paper weight.

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b83e0a  No.689172

>>689171

That seams to be the case. The SVT-40 faq seams to suggest the latter "Type 4" receivers are stronger than the rest though unfortunately lack the scope rails (not that you'd use the scope in full auto anyways): https://forums.gunboards.com/showthread.php?504617-Tokarev-SVT-40-Identifying-collecting-and-FAQ

In addition there are replacement recoil springs for sale: http://www.ppsh41.com/SVTitems.html

Their are also recoil buffers/pads available though I heard mixed results with SKS and AKs (possibly due to looser tolerances of Russian weapons): https://saigaclub.net/saiga-ak-vepr-svd-parts/spare-parts-saiga/recoil-buffer-svt

A guy called Starmetal also has a special gas adjustment valve for the rifle here: https://forums.gunboards.com/showthread.php?794514-SVT-40-Information-amp-Other-Things

He doesn't show any pictures of it unfortunately but says it's based on his earlier French MAS adjustment valve here: https://forums.gunboards.com/showthread.php?112048-MAS-49-56-Adjustable-Gas-Valve

The only other thing I could think of for helping the receiver's life is tightening up the gas piston (the video is of the G43 but it shares the same gas system so should be partially applicable): https://www.youtube.com/watch?v=N5wL3ALiRZk

Both the Finnish document and the thread I linked in my previous post mention that the piston parts can sometimes come lose, there is even a thread where they went through the wood handguard: https://forums.gunboards.com/showthread.php?13947-SVT40-Help!!!!

Personally I think I would be nice if someone redesigned a one piece op rod that is adjustable/shim-able and possibly locks into the piston cup.

For the barrel the only thing I can think of is a carbon fiber composite barrel which maintains the same size but offers improved cooling/accuracy, though I don't know if that'd void the gun's Curios and Relics status in which case it'd have to follow the shitty 922r policies: https://www.wargunmods.com/922-r-compliance-and-the-sks/

All this is academic of course.

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8712f7  No.689189

>>689172

Well you could always buy a replica and melt that without endangering the SVT.

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b83e0a  No.689196

>>689189

The don't allow either the replicas or the originals to be imported into the US anymore (some 90s ban). You also legally cannot create a new receiver as in bureaucratic bullshit paperwork the receiver IS the gun, thus you be making a new gun not repairing an existing one.

Like I said though, it's all academic speculation; I won't actually try it on a real one.

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