Tightening the buffer tube on vz58 sporter rifles... (fab defense stock)

cerebral_bore

cerebral_bore

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I am a complete noob to this.

I noticed as soon as I took the vz58 out of the box the stock turned around either way on the buffer tube (actually, the entire buffer tube is spinning in the threads on the adapter at the back of the receiver.)

I looked up how to tighten it but most of the videos and tutorials are for ar15/m4 platform, and I'm not sure if those will work.

I don't see anything I can tighten. There is no end cap that other buffer tubes in videos/tutorials I have seen have and nowhere that needs a phillips screwdriver to tighten, as everyone in the vids/tuts are using...
 
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If it helps, the entire buffer tube is spinning in the threads on the adapter on the back of the receiver.

There is a lock ring, but no idea how to tighten it/what tools I need.

I can't seem to find installation instructions anywhere.
 
http://www.marstar.ca/dynamic/product.jsp?productid=85731 you need a ar tool there usualy about 30 dollers hears a link for one on a marstar
 
deemoney said:
http://www.marstar.ca/dynamic/product.jsp?productid=85731 you need a ar tool there usualy about 30 dollers hears a link for one on a marstar
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Is this to torque the lock ring? Is there a way I can hand tighten it for the time being?

I need instructions from someone who has done this before. Pretty sad that it would come this way straight out of the box.
 
I tried hand tightening the lock ring but its not "locking" anything!

The buffer tube still spins freely in the threads, no matter how tight the lock ring is screwed on.
 
8yhv20.jpg


This picture shows that the buffer tube is crooked/out of alignment when fully tightened.

Sorry its upside down. Not sure if its helpful.

So the parts are in this order:

receiver -> stock adapter -> buffer tube/lock ring -> buttstock
 
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Don't fully screw in the buffer tube. Back it off one rotation until it is aligned properly, then tighten the locking ring. If it still doesn't work then back it off another full rotation and try again. Repeat until the locking ring takes hold. Worked for mine.
 
HunterSon said:
Don't fully screw in the buffer tube. Back it off one rotation until it is aligned properly, then tighten the locking ring. Worked for mine.
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Just tried this. The "locking ring" doesn't seem to be locking anything. Its tight against the adapter, but the buffer tube can still spin in the threads (of the adapter and the locking ring) no matter how much its tightened.
 
Just added to my post. Back off the locking ring first. Unscrew the buffer tube several threads and then try to tighten the locking ring again while holding the stock and tube in alignment.
 
Use a castle nut wrench, place the gun in a vice. Turn the buffer tube all the way until it no longer turns and tightens into the adapter. Then back it off just enough to align the stock to where you want it. Then (with the gun still in a vice) tighten that castle nut with a castle nut wrench with some muscle. The stock shouldn't rotate then. After that is done (I do this anyway, but you don't) I would suggest staking the adaptor and castle nut. I just place the tip of a flat head screw driver on the adaptor where it lines up with one of the notches on the castle nut and give it a few good taps with a hammer. That basically folds metal into a castle nut notch and prevents it from loosening off. Or you could just use loctight.
 
You don't need a $30 AR wrench for that ####. Just take a flat head screw driver and lightly tap on it with a hammer to loosen or tighten it.

The threads could be stripped so I would take it off and inspect it.
 
I think you're lock nut Might be on backwards looking at the picture is the notches in the lock ring facing the muzzle or butt?
 
cerebral_bore said:
Just tried this. The "locking ring" doesn't seem to be locking anything. Its tight against the adapter, but the buffer tube can still spin in the threads (of the adapter and the locking ring) no matter how much its tightened.
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Does it make up tight to the face of the adapter? Even hand tight should make the buffer tube noticeably harder to turn.


Mumbles Marble Mouth said:
The threads could be stripped so I would take it off and inspect it.
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+1. It sounds to me like the locking nut may be stripped. I would be pulling it all apart and checking threads before I went any farther.


Mark
 
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