SA stock fit to Norinco Receiver (Before+After Pics)

[TexasGunner]

I have a Springfield Armory composite stock from a SOCOM 16 that I would like to fit to my M305 Norinco receiver.

I'm aware that this requires removal of some of the material from the stock in order that the trigger guard will close. I know there was a good detailed post with pictures that I had read previously, but I can not find it despite searching. Can someone direct me to this information?

 

[I <3 M14]

Try dropping it in and see what happens... it may be a drop in fit.

The only thing you'll have to worry about is either installing an m1a connector lock (longer than the chinese one ) or search and perform the "popsicle stick fix"

 

[IRC]

I have a SA composite stock on my Norinco. You do not have to remove material from the trigger guard area! You do have to remove material from the stock where the bottom of the receiver meets the top of the stock under the ejection port. The norc receiver is cut on an angle where the SA stock is flat. As result the receiver will not drop down into the stock completely. Took less than 5 min with a file and does not affect the appearance of the stock when assembled.

 

[chalkriver]

Texas I have a few pics showing where the groove has to be made in your stock , the pics are of my Archangel stock but they show the area that may need work under your receiver .

As well once you get the receiver sitting flat up top with no gaps showing you might have to remove a little material under the trigger guard area on the trigger pads and rear trigger guard area.

It is very important to do the trigger after assembly test before you remove any material under the trigger guard. If it still fails the test remove a little at a time evenly until it will pass the test. It is important to remove the material evenly so the trigger group still sits flat.

http://www.canadiangunnutz.com/forum/showthread.php?p=7034135#post7034135

 

[TexasGunner]

Texas I have a few pics showing where the groove has to be made in your stock , the pics are of my Archangel stock but they show the area that may need work under your receiver .

As well once you get the receiver sitting flat up top with no gaps showing you might have to remove a little material under the trigger guard area on the trigger pads and rear trigger guard area.

It is very important to do the trigger after assembly test before you remove any material under the trigger guard. If it still fails the test remove a little at a time evenly until it will pass the test. It is important to remove the material evenly so the trigger group still sits flat.

http://www.canadiangunnutz.com/forum/showthread.php?p=7034135#post7034135

Thanks chalkriver, I looked at your pictures. What type of tool did you use to "cut" the 6"+ groove in the top right hand side of the stock? IRC seemed to indicate that it could be filed down, I presume just with a metal file?

 

[chalkriver]

Correct , I used a broken square sided file and had it cut a groove into the stock at an angle .Look on the bottom right side of the receiver and you will see the metal is at an angle. If you were carefull a dremmel tool would probably work .
I have to stress the importance of the trigger test after assembly when fitting a different stock on these rifles, as you dont want a slam fire ...





Hey I just hit 2000 posts and I officially have no life...lol

 

[IRC]

The material in the SA stock is very easy to file and finish once filed looks very much like it was meant to from the factory. Mark the stock with a sharpie where the interference is and go slow with a file checking the fit often. The material comes off fast and it is a straight forward process. Somewhere on the site is the exact angle to match the stock to the receiver but I think I used about 40-45 degrees which worked out fine. If you PM me your email address, I can send a couple of pics of my stock for comparison.

Thanks chalkriver, I looked at your pictures. What type of tool did you use to "cut" the 6"+ groove in the top right hand side of the stock? IRC seemed to indicate that it could be filed down, I presume just with a metal file?

 

[Repro77]

Hmmmmm. I have a Poly receiver, and it just dropped into an SA composite stock, no problem. Its all USGI on mine except for the receiver, if that makes a difference......

 

[TexasGunner]

Looks like you just got lucky with yours Repro, cause my trigger group will for sure not close without some filing.

PM sent IRC.

 

[Repro77]

Looks like you just got lucky with yours Repro, cause my trigger group will for sure not close without some filing.

PM sent IRC.

My SA stock has a groove in it already; it was a brand new SA factory synthetic stock. I did have to remove just a bit of material under where the trigger group snaps in to make it cycle properly, as the hammer would not lock back with the trigger pulled.

 

[TexasGunner]

OK, I examined my stock a little more carefully based upon what has been said in this thread. See pictures below.

In the photo above, you can see that the stock is already tapered, but only above the red line, up to the point of the notch. Beyond that, above the yellow line it is flush.

Here it is with the receiver installed. You can see that it is not sitting flush as the tapered portion up to the notch does not go back far enough. I think that I need to file down the portion above the purple line to match the angle ahead of the notch. This would effectivley move the notch rearward on the stock.

Does this seem right? Comments Please? Don't want to ruin my stock.

 

[IRC]

That is exactly correct. I sent you a couple of pics of mine by email and you can see it is just a couple of inches that need to be tapered to fit.

OK, I examined my stock a little more carefully based upon what has been said in this thread. See pictures below.

In the photo above, you can see that the stock is already tapered, but only above the red line, up to the point of the notch. Beyond that, above the yellow line it is flush.

Here it is with the receiver installed. You can see that it is not sitting flush as the tapered portion up to the notch does not go back far enough. I think that I need to file down the portion above the purple line to match the angle ahead of the notch. This would effectivley move the notch rearward on the stock.

Does this seem right? Comments Please? Don't want to ruin my stock.

 

[TexasGunner]

That is exactly correct. I sent you a couple of pics of mine by email and you can see it is just a couple of inches that need to be tapered to fit.

IRC, did you just use a metal file, or did you also use sandpaper or something else to get a smooth finish that resembles the rest of the stock?

 

[IRC]

Just used a metal file and then a quick scrub with a green scrubby to make it blend in. For the most part, its all hidden unter the receiver and out of sight. Did you get the email photos?

IRC, did you just use a metal file, or did you also use sandpaper or something else to get a smooth finish that resembles the rest of the stock?

 

[TexasGunner]

Just used a metal file and then a quick scrub with a green scrubby to make it blend in. For the most part, its all hidden unter the receiver and out of sight. Did you get the email photos?

Yes, I got the pics you emailed; looks good. Do you mind if I post one of them so others can see what you did?

 

[TexasGunner]

Ok went to town with the file, and here are the before and after pictures. Receiver is nice and tight now, and while the trigger group was fairly tight, it did pass the trigger safety/function test.

I do appear to have another problem however. When I manually cycle the action back, I'm getting allot of resistance near the back of the stroke. It seems as if there is friction on the bolt. In fact the bolt is basically jamming when it gets to the back, and then I have to give the op rod a little tap forward to release it so the action will slam back closed. Looks like I solved one problem and created another. Suggestions anyone?

 

[IRC]

Looks very good, well done. I had the same problem with bolt hanging up at the back. Turns out the operating rod on the norincos is larger and drags on the stock as it cycles to the rear. i thought it may just be mine, guess not. Time to get the file out again! The interference occurs as the front of the op rod comes to the rear and it pushes out against the inside of the receiver cut out in the stock. if you cycle the the action a few times you will be able to see the rub marks on the stock.

I clearanced the stock and it works like a charm. you could also take material of the from of the op rod as well. i thought the plastic would be easier to remove.

 

[TexasGunner]

Ah Haah! I inspected the op-rod and stock, and there is clearly some wear on the op-rod. I presume it is hitting the stock at the location circled in red. Is that the spot you filed IRC?

 

[IRC]

I had the same interference and thats where I started. I ended taking material from there forward at least a couple of inches forward. The good news is that after all this hard work is done and the stock is fit to the rifle, it's very nice

 

[Satain]

Ah Haah! I inspected the op-rod and stock, and there is clearly some wear on the op-rod. I presume it is hitting the stock at the location circled in red. Is that the spot you filed IRC?

Don't froget the popsicle mod to this stock. As it apears from this pic that it looks like it has the indent were the fun linkage goes. This is because S.A. uses the old full linkage retainer for the M1A and the Nork's don't.
This picture will help explain it to you;