AR15 question -- .223 / 5.56

[daytomann]

Hey guys,
I'm a bit of a novice when it comes to ARs. I have a question about cartridges for a particular AR.

This is a DPMS model. It has .223 5.56 stamped on it.

Please clarify...does this mean the rifle will safely and reliably shoot either cartridge? Which cartridge is the more recommended of the two to run through it?

Thank you!

 

[Bradley Walker]

Yes.

5.56 is literally the metric designation of the 223 cartridge. Typically the 5.56 chamber is cut to shoot the SS109, and 5.56 NATO is loaded to higher pressure than SAAMI .223.

Potato
PUHTOTOE

 

[Hump66]

We seriously need a sticky just for this topic, it comes up too often, and no one searches for previous threads. Maybe if it was permanently at the top...

Here are some links from previous threads regarding this:

http://www.okshooters.com/showthread.php?170052-223-vs-556&p=2139267&viewfull=1#post2139267

http://www.okshooters.com/showthrea...nd-5-56-NATO&p=1859882&viewfull=1#post1859882

http://www.luckygunner.com/labs/5-56-vs-223/#/

 

[daytomann]

A sticky would be a great idea!
Thanks for the links Hump!!

 

[FamousAJ]

put this ^^^^^ in the suggestion box then!