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5/6/2014 6:15:32 AM EDT
I bought an upper off a friend and it has a stainless Saber Defense barrel. I am new to AR's and I can not find anything stamped on it indicating if it is a 223 barrel or a 556. Is there another way to tell?

Thank you

Wojo
5/7/2014 1:46:46 AM EDT
[#1]
I didn't think Sabre made stainless barrels?

And the few Sabre barrels I've seen have been marked somehow. Have you looked under the handguards?

Maybe it's been re-barreled sometime in the past?

Anyway, a gunsmith should have the correct gauges to tell you which chamber it has.
5/7/2014 4:46:12 AM EDT
[#2]
There used to be some Sabre surplus barrels at Midway or Brownells unfinished in the white.  I wonder??  Be careful as you could potentially have an unfinished barrel that looks stainless and rusts like crazy.  Or not just putting it out there.
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