I received a Norinco AR15, receiver says 223, paper says 5.56?

Gaebz

Gaebz

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Hello all, this is my 3rd Norinco AR15, the ones I had before were marked 5.56 on the receiver and I bought them on Leverarms. Receiver said imported by Leverarms.
Now I have received a different one from GoTenda (Which is an outstanding place to shop btw)

The Tenda one says 223 on the receiver but the bill says 223/556 (See pictures below)
Before I explode my AR15 with 5.56, does anyone know if it's 5.56 AND 223 compatible?
Man I hope this is not a 223 only...



 
This shouldn’t be a problem today. The true difference it will make is only on paper yet never practical. Enjoy your new rifle.
 
When I ordered my rifle and ar I wanted them in 5.56 because you can get great deals on 5.56 ammo. I just saw an add saying 5.56 was going for $315/1,000 rds
 
There is little to no difference between the chamber of .223 Rem and 5.56 nato. The only real difference is in the brass, 5.56 has a smaller internal volume. 5.56 also has a higher chamber pressure spec which only comes into play if the barrel blank was of mediocre quality. I do not think that Norinco has 2 different stocks of barrel blanks, they probably just labeled the gun different. I've got a couple of Mini-14's that say .223 Rem and have never worried about putting 5.56 through them. I don't think you have to worry about it.
 
FYI the chamber is in the upper receiver, the lower receiver is multi-calibre the chances of the lower receiver blowing up is pretty low :cool:
Just buy a barrel with 223 Wylde chamber you can shoot both .223 or 5.56 ammo.
 
If your rifle is marked .223, you can fire both .223 and 5.56 but if it is marked 5.56 you should only use 5.56. 5.56 is a military round and even though the brass is thicker, it is not loaded as hot as a hunting round. .223 recievers and barrels are designed to take the higher pressures and the expansion of the thinner walls of the .223 round so a 5.56 will be safe to fire in a .223 rifls but not the other way around.

Accuracy is a different story. You will have to get into things like twist rate and bullet selection but if you are just blasting away then minute of refrigerator is ok.
 
Garaldtao said:
If your rifle is marked .223, you can fire both .223 and 5.56 but if it is marked 5.56 you should only use 5.56. 5.56 is a military round and even though the brass is thicker, it is not loaded as hot as a hunting round. .223 recievers and barrels are designed to take the higher pressures and the expansion of the thinner walls of the .223 round so a 5.56 will be safe to fire in a .223 rifls but not the other way around.

Accuracy is a different story. You will have to get into things like twist rate and bullet selection but if you are just blasting away then minute of refrigerator is ok.
Click to expand...


lol ok
 
Garaldtao said:
If your rifle is marked .223, you can fire both .223 and 5.56 but if it is marked 5.56 you should only use 5.56. 5.56 is a military round and even though the brass is thicker, it is not loaded as hot as a hunting round. .223 recievers and barrels are designed to take the higher pressures and the expansion of the thinner walls of the .223 round so a 5.56 will be safe to fire in a .223 rifls but not the other way around.

Accuracy is a different story. You will have to get into things like twist rate and bullet selection but if you are just blasting away then minute of refrigerator is ok.
Click to expand...

Be careful what you read on the Internet people...
 
This debate arises often. In all seriousness is there anyone on CGN that can provide a logical, well informed opinion?
 
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I called Tenda, they say Norinco are mil-spec and it’s a 5.56 chamber.
So I can use both in it.
Tenda said they have been selling CQAs for 10 years and they have always been marked 223 and they never had any problem with shooting 5.56.
In fact, it’s a 5.56 chamber not a 223 even if it’s written 223 on the barrel.
And they seemed 100% confident in what they said over the phone, without a single doubt.
 
It’s the throat that is different (maybe). It’s 99.99% likely a NATO chamber. I wouldn’t worry about the whole 223, 5.56 thing unless you have an old 223 with a 1 in 12 twist tube. Hell, even if I did I’d still shoot 5.56 out of it. Check the first dozen pcs of brass for pressure, and the odd one after that just to be sure.

The 223 vs. 5.56 is blown way out of proportion. ..
 
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