Type 81 Bolt

HirvGotti

CGN frequent flyer
Rating - 100%
16   0   0
Can any of you T81 owners out there post a picture of your bolt like the one I have below? I'm having BHO issues and I'm trying to figure out if the flat spot on my bolt is the problem.

ayjiN8rl.jpg
 
It is and it isn't a mag issue. I've confirmed all my mags work in another T81 without issue. That being said, one of my mags works in mine without an issue. So that means the mags aren't all doing the same thing and my rifle is slightly out of spec somehow. Not to mention my stock is pretty crooked and barrel has a definite drift to the right. Thanks for the suggestions.
 
I can meet with you if you like, it would be ideal to have a vise to work with but we could look your rifle over in the back of my truck if it came down to it..

Seriously though, you can come to Abby range as my guest, I can bring my stuff to measure your rifle and give you my opinion, for what its worth. I am going to bring at least a crate of czech and a can of chinese and make a day of it next weekend.

And after having taking apart 4 of these rifles I can definitely say some come apart easier. The sight setting to remove the top handguard can be particularly fiddly, if you have ever taken apart an SKS you will know about having to get the right angle for it to swing up freely. You may have to wiggle it while turning the sight knob to find the spot for it to slide up
 
Thanks klaus, your opinion would be valuable as you have 4 friggin folders lol. I'm hoping TI responds with instructions to return/exchange on Monday. By next weekend I will be in Edmonton for the holidays or I'd take you up on your offer to meet at Abby. I have confirmed that all of the mags function in a fixed stock that I had quick access to. I haven't had the chance to see another folder in person yet and seeing yours would have put more into perspective.

Since you have a large sample of 4 folders, can you confirm if this is normal/defective for the rear stock to be twisted as seen below?

Wdi1IPel.jpg
 
Thanks klaus, your opinion would be valuable as you have 4 friggin folders lol. I'm hoping TI responds with instructions to return/exchange on Monday. By next weekend I will be in Edmonton for the holidays or I'd take you up on your offer to meet at Abby. I have confirmed that all of the mags function in a fixed stock that I had quick access to. I haven't had the chance to see another folder in person yet and seeing yours would have put more into perspective.

Since you have a large sample of 4 folders, can you confirm if this is normal/defective for the rear stock to be twisted as seen below?

Wdi1IPel.jpg

This is one of the other "issues" I checked for. I will have to go and look again, at least one of mine was similar to yours but I felt it to be good enough.

Honestly, I was more concerned with checking for possible barrel or trunnion alignment issues than I was with the stocks not being perfectly vertical. I was more worried with the sharp edge of the mechanism that hangs down the back of the receiver a bit. And I am confident enough in my metal fabricator skills that I can tweak a folding stock straight if it bugs me enough.

As to mags, the first I tried needs obvious tweaks/truing to the feed lips and general top of the mag. Some of these mags are crap as already shown by others, I will probably be sending some of mine back. The second mag I tried seemed much better made/finished and locked the BHO on all my rifles. There is a fair amount of wobble with these mags though as already said. I have to go through my mags to check for function.

Hilarious, here I was thinking that thank god I ordered this many rifles, at least I will have enough to go shooting with. And now I will be sending some back by all indications.

THANKS TI!!!
 
It is and it isn't a mag issue. I've confirmed all my mags work in another T81 without issue. That being said, one of my mags works in mine without an issue. So that means the mags aren't all doing the same thing and my rifle is slightly out of spec somehow. Not to mention my stock is pretty crooked and barrel has a definite drift to the right. Thanks for the suggestions.

Can you hold the bolt back and reach into the magazine well from underneath and feel if the bolt catch is moving freely up and down? Also check if it goes high enough by holding it up with your finger and gently lowering the bolt onto it and watching to see if it looks like it has a decent amount of hold on the bolt face.
Also make sure the mags are inserted correctly there's a little false lip below where the mag is supposed to engage, my mags feel quite secure when inserted and flop around if not in right.
 
Can you hold the bolt back and reach into the magazine well from underneath and feel if the bolt catch is moving freely up and down? Also check if it goes high enough by holding it up with your finger and gently lowering the bolt onto it and watching to see if it looks like it has a decent amount of hold on the bolt face.
Also make sure the mags are inserted correctly there's a little false lip below where the mag is supposed to engage, my mags feel quite secure when inserted and flop around if not in right.

So is there a double lip there, like a ledge of sheet metal just below the trunion recess? I haven't got mine yet to understand what you mean, but this is curious and could be a different "fault" to watch out for?
 
So is there a double lip there, like a ledge of sheet metal just below the trunion recess? I haven't got mine yet to understand what you mean, but this is curious and could be a different "fault" to watch out for?

It's easy to avoid if you do the right motion but if you forget and try to insert them more straight line it can get caught weirdly. I only did it a couple times when I first got it. Haven't had rock and lock since my Swiss Arms a couple years ago.
 
Actually these bolts look different to me.
ayjiN8rl.jpg

attachment.php


The top one has material missing.. right side above the charging handle... bottom picture looks to be 90 degree.. and not 45 like the top picture.. Not all bolts are created equal.
 
Last edited:
Actually these bolts look different to me.
ayjiN8rl.jpg

attachment.php


The top one has material missing.. right side above the charging handle... bottom picture looks to be 90 degree.. and not 45.

That just looks to be lighting to me. I think they are identical, and either way, the lug is not related to BHO engagement.
 
Can you hold the bolt back and reach into the magazine well from underneath and feel if the bolt catch is moving freely up and down? Also check if it goes high enough by holding it up with your finger and gently lowering the bolt onto it and watching to see if it looks like it has a decent amount of hold on the bolt face.
Also make sure the mags are inserted correctly there's a little false lip below where the mag is supposed to engage, my mags feel quite secure when inserted and flop around if not in right.

The bolt catch moves freely and has great coverage when operated manually like shown below. However the problem is the tolerance in my magwell allows the mag to rock forward too far tilting the rear of the mag down so it doesn't apply the bolt catch. The reason the bolt catch works sometimes in my video is because I am putting pressure on it towards the rear of the rifle ensuring it is tight to the back like it's supposed to be.

EmrdpYul.jpg




I know what you mean about the second ledge and possible user error for insertion of the mags, that is not what you are seeing in the video I posted and for further knowledge of what that would look like I've photographed the differences below.

INCORRECT (Left) CORRECT (Right)
woju2sBl.jpg
kshubjul.jpg
 
Back
Top Bottom