Problem with M305 choate stock

G

GTNgo

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Edmonton, Alberta
Hi,

I recently purchased a Choate stock from wolverine and tried fitting it on my m305. It didn't fit and i read a thread where another person had the same problem and filed it down to fit it. I did the same thing and it still wont fit. Now i think i filed it too much and there is a gap between the receiver and stock :( but still wont fit. I brought it to a local gunsmith and he gave it a look and smack the trigger group in with a malet. He said it should be fine. Gave it a look at home and it failed the function test. Put it back in the chinese wood stock and the function test worked.

Any suggestions??
How to fill the gap? Epoxy? Resin?
How to make it sit properly and work?











I notice the gap for the trigger group in the wood stock is deeper than the choate one. Maybe i need to file that down?

 
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If the heel's not touching the stock that's a problem. On a boyd's stock I had to sand down this area:

oLsgW7R.png


Because that part of the receiver angles downward to the outside. Since you're having trouble seating the trigger group my first guess would be that this is the problem.
 
I'm with mewse, sanding down the outlined area should make the receiver fit, and possibly fix the function check issue. If the fit is good after that but it still fails the function check, these thread should help:

https://www.canadiangunnutz.com/forum/showthread.php/91174-M14-M305-M1A-Test-after-assembly
https://www.canadiangunnutz.com/for...05-function-test-woes?highlight=m305+function

I had the same function test problems when I installed a Boyd's walnut stock. The information in those threads helped me correct it.
 
I just bought a wood stock from treeline and had the same issues, Had to sand a bit by the heel, where the trigger guard sits in and in front of the trigger guard where the flat plates sit against the stock. I finally got it to the point where it will pass the function test as long as the trigger guard is not snapped into place. I am hoping that if I leave it sit for a while the wood will compress enough to allow it to work properly. With a stock like the OP has he is probably going to have to keep sanding a bit at a time until it passes the function test.
 
The bottom right side of the Chinese receivers are shaped different and the right side of the stock needs to be inletted aprox 6.5 inches .If you look at the bottom of your receiver that area has an angle shape on the bottom . Once you cut a groove in the stock to correspond the heel of the receiver will then sit flat . Then you can start to get the trigger test after assembly issue sorted out . VERY IMPORTANT it passes the trigger test . Pics are of a couple of the Archangel stocks I have done.






 
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GTNgo said:
So got a weapons tech to take a look and will do some work on it with some Marine tex. Stand by for more pics
Click to expand...
Don't use epoxy, I have the exact same stock. Let me post some pictures to show you what needs to be done. You need to inlet a small amount of the stock to let the action fully seat in. If not the action is tipping forward.

Pete
 
The stock needs to be modified so the outer edge of the stock between the lines slopes downward to the outside of the right hand side of the stock. It must match the angle of the underside of the Norinco receiver.
The inside slopes toward the inside of the stock, like it is on the other side. Hope that makes sense.

IMG_9311.JPG
 
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The problem is that i tried doing that i ended up sanding way too much of the stock. Thats why there is a gap on the heel of the receiver. The receiver is already fully seated in the stock (looking from the bottom and inside) and there is still that gap. Thats why i have to use marine tex to build it back up and then sand it until it will fit the receiver. I don't know if i'm describing this properly
 
From the pictures, it looks like you sanded the wrong part (at the portion under the very back of the receiver, called the heel) and not the bit at the end of the track (which is still touching the stock).
 
Odd Shot said:
From the pictures, it looks like you sanded the wrong part (at the portion under the very back of the receiver, called the heel) and not the bit at the end of the track (which is still touching the stock).
Click to expand...

You are correct, i sanded both and did take a bit more on the heel. Thats why the weapons tech said to use the marine tex.
 
Sweet thx for thoses links!!! I think i have to do the same thing as on the second link and sand the bottom for the function test to pass. Then rebuild the top that i sanded off too much with the marine tex.
 
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Just little update. Rebuilt the stock with some Marine tex since i shaved too much off. Sanded it off to fit nicely and painted it black. Removed a bit of material underneath the trigger group on the stock and now she passes the function test. Here are some pics.



 
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