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1/22/2020 12:12:56 PM
Posted: 7/10/2009 4:47:26 PM EST
[Last Edit: 7/10/2009 4:57:14 PM EST by uncoolperson]
Trying to figure out if my AR is chambered .223 or 5.56.

I can't find any markings, got the rifle from a gun show a few months back, it appears to be a homebuild.

Any ideas of how I can figure this out without hurting me or my rifle?
Link Posted: 7/10/2009 7:48:13 PM EST
Link Posted: 7/11/2009 4:43:39 AM EST
Or you could check headspace with a headspace gauge.
Link Posted: 7/12/2009 7:21:30 AM EST
Really do a good close job of looking at this bbl. for any markings. My bbl markings are very lite and really tough to find and read.
Link Posted: 7/12/2009 8:02:46 AM EST
Have it checked a gunsmith will usually charge $20.00 to do it for you. If it's not he can ream it to 5.56.
Link Posted: 7/12/2009 5:05:16 PM EST
Link Posted: 9/17/2009 9:28:38 PM EST
Check under the handgaurds, sometimes they are obscured by those
Link Posted: 9/18/2009 5:39:44 AM EST
Originally Posted By thevarg:
Check under the handgaurds, sometimes they are obscured by those


That's where mine is marked. Top of the barrel under the handguards. Hard to see in dim light.
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