Chrome lined barrel?

[COLOSHOOTR]

I just picked up a new Colt 6520 AR-15 for work. I'm no stranger to the AR-15 platform but don't know much about Colt's except they cost too much. My issue is I can't find anything stating if the 6520 or any of their LE Carbines on their web page have chrome lined barrels. I'm trying to figure it out before I go break the weapon in so any help would be greatly appriciated. Also, I've found barrel code lisings for RRA does anyone know where I can find lists of other brands?

[steve1911]

I have colt 6520 and it is chrome lined bbl.

1911club#410

[RMTactical]

Yeah, it should be chromed.

[G. Gunman]

:) Somewhere on the barrel should be the code: 'MP'. This means that the barrel has been, 'magnetic particle' non-destructive tested AND passed. This code applies, only, to chrome-lined barrels.

(and, sometimes, to the bolt as well!) ;)