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Posted: 3/1/2010 3:30:27 PM EDT
| How can a person determine if his AR-15 has a .223 or 5.56 chamber ??? The barrel is not marked at all as far as I can see. TIA |
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Many unmarked barrels out there. I have one that is 223 and it pisses me off.....they originaly told me it was a 5.56
Check : http://www.m-guns.com/tools.php There are cross sections of a 5.56 and 223 chamber. The 5.56 has a longer leade...you can see it in the picture. If you open your AR and take the bolt out and look down the barrel from the chamber end on an angle you can actually see the leade if you have a 5.56 chamber. If you are pissed off about it ADCO can check out and ream your chamber to 5.56 if you want for $30 or so adcofirearms.com under shop services. |
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The only "gauge" I know of is to run the reamer in the chamber. If it cuts then you were not 5.56.
If you have a 5.56 and a 223 barrel you can look at, you will be able to tell the difference by eye. Hell, if I can do it anyone that can see can probably do it. You can get away with shooting 5.56 ammo in a 223 chamber but it is not recommended. So, even if you put some 5.56 down the pipe that does not mean you have a 5.56 chamber. |
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Quoted:
The only "gauge" I know of is to run the reamer in the chamber. If it cuts then you were not 5.56. If you have a 5.56 and a 223 barrel you can look at, you will be able to tell the difference by eye. Hell, if I can do it anyone that can see can probably do it. You can get away with shooting 5.56 ammo in a 223 chamber but it is not recommended. So, even if you put some 5.56 down the pipe that does not mean you have a 5.56 chamber. Sir....If the builder of the gun claims it is 5.56 would you take it as the truth ??? What made you suspect your gun was not 5.56 ??? |
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Quoted:
The only "gauge" I know of is to run the reamer in the chamber. If it cuts then you were not 5.56. If you have a 5.56 and a 223 barrel you can look at, you will be able to tell the difference by eye. Hell, if I can do it anyone that can see can probably do it. You can get away with shooting 5.56 ammo in a 223 chamber but it is not recommended. So, even if you put some 5.56 down the pipe that does not mean you have a 5.56 chamber. So....Can I use my Mini-14 chamber in 5.56 as a comparison to my AR-15 ??? |
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I understand that although a manufacturer may mark their rifle 5.56, it may still be 223? Is that correct? or is it against the law to do such a thing?
Also, there is a marking on the lower on the mag well. Which one if either has to be marked correctly? I would assume the barrel. Does the barrel on an AR contain the chamber or does the upper? As you can tell I don't know anything about ARs. 
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Chamber is part of the barrel. If the barrel is marked 5.56 NATO, then it is 5.56. If it's marked incorrectly then I would contact the maker. But then I wouldn't concern myself that much with it unless you plan to shoot a boatload of 5.56.
Like someone else stated. You can have it reamed to 5.56 or better yet, a Wylde chamber. |
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