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jwalker497
November 28, 2009, 12:02 AM
What's a good price for a used Colt AR-15 A2??? Also will the A2 shoot both 5.56 and .223. Are there any issues with shooting .223 form it? Thanks.

olyinaz
November 28, 2009, 01:59 AM
If it's marked 5.56mm (which I suspect it is) then it will shoot .223 just fine. 5.56 has a bit more stank on it (50-100fps) but you have a much wider selection of .223 factory ammo for hunting. My only suggestion is that if you have a genuine Colt take care of it and don't feed it cheap steel cased Russian ammo.

Regards,
Oly

gotigers
November 28, 2009, 09:03 AM
At gun shows around memphis i have seen them lately for around $1000. Gun shows around here are usually a little high.

jwalker497
November 28, 2009, 09:55 AM
Actually its marked .223. So does that mean I cant shoot 5.56???

NSO_w/_SIG
November 28, 2009, 10:31 AM
Make sure you are looking at the markings on the barrel not the lower reciever. I am betting it is 5.56. Never rely on the reciever for accurate chambering information.

ranger dave
November 28, 2009, 11:58 AM
5.56x54 is 223 rem just loaded to different specs

olyinaz
November 28, 2009, 12:05 PM
If the rifle is stamped .223 on the barrel without any mention of 5.56mm then it is USUALLY not recommended that you shoot 5.56mm ammo in it (the Ruger Mini-14 being the general exception, but they tell you so in the instruction book with the Ruger). Sorry, but it's complicated if your rifle isn't clearly stamped 5.56mm.

The good news is that there's plenty of inexpensive .223 all over the place so it's really not an issue unless you make it one.

Regards,
Oly

Microgunner
November 28, 2009, 12:08 PM
I thought chambers for 5.56 were cut different with more free bore so unfired cartridges could be more easily extracted. also, I think the 5.56 brass is thicker and the 5.56 bullet is seated deeper.

NSO_w/_SIG
November 28, 2009, 01:46 PM
It is 45 mm Dave.

Op, just read this for the answer on the differences.
http://ammo.ar15.com/ammo/project/hist_diff.html