Daniel defense M4 upper w/ hammer forged barrel?

BigBuckeye

Joined: Mar 2009

Posts: 24

EE: 0% (0)

OH, USA

Posted: 4/4/2010 4:50:56 PM EDT

I purchased this upper and the barrel has no markings, is it safe for 5.56?

BigBuckeye

Joined: Mar 2009

Posts: 25

EE: 0% (0)

OH, USA

Posted: 4/23/2010 8:21:00 AM EDT

[Last Edit: BigBuckeye][Edited] [#1]

I'll answer my own question, I found the markings under the handguard...it is 5.56...

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