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Thread: What does a chrome lined chamber look like?

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    What does a chrome lined chamber look like?

    Anybody got a picture of a chrome lined chamber on a Colt LE6920? I just called Colt agaiin and they said my mt6400c doesn't have a chrome lined chamber and barrel. It makes sense since it's marketed as "match target". And from what I understand chrome lining increases the life of the barrel but might slightly affect accuracy.

    I know what my chamber looks like:
    https://www.m4carbine.net/attachment...4&d=1247933687

    So, how much shinier than that is a chrome lined 6920 or other m4 type with a chrome chamber? Just curious. Thanks.

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    the chrome shows it self via a lighter gray ring around the chamber anus..

    Last edited by bkb0000; 07-22-09 at 14:09.

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    Your picture clearly shows a chrome chamber. And you must have had a confused rep, because MT6400Cs have chrome chambers and barrels, unless something changed very recently-and yours is chromed. Do you have a marking on your barrel with a C MP on it? The C is for chromed.

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    Quote Originally Posted by bkb0000 View Post
    the chrome shows it self via a lighter gray ring around the chamber anus..

    There is a Bivus and Butthead joke in there, I just wont make it.

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    Quote Originally Posted by DrewH View Post
    Your picture clearly shows a chrome chamber. And you must have had a confused rep, because MT6400Cs have chrome chambers and barrels, unless something changed very recently-and yours is chromed. Do you have a marking on your barrel with a C MP on it? The C is for chromed.
    Yeah, I have the C MP. But I have that on my mid 90s match target hbar, and my 1984 ar15 too. The first time I called which was last week, the guy told me to take the top handguard off and look for a C. I had the C already but it was near the muzzle as C MP. Under the handguard I found an O and G along with a date of 05/09. The chick I tallked to today just flat out said NO, that I don't have one on this gun. But I didn't get into markings or anything like that.

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    the C now stands for Colt (like the B stands for Bushmaster, FNMI for FN, etc.)
    the O stands for chrome lined chamber & bore.

    the 6400 is fully chrome lined AFAIK.

    I still dont know the meaning of the G...I have one on my 6731 as well...
    Last edited by Frens; 07-22-09 at 15:16.
    *** Damn Proud to Be an American Ally ! ***

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    Quote Originally Posted by Frens View Post
    the C now stands for Colt (like the B stands for Bushmaster, FNMI for FN, etc.)
    the O stands for chrome lined chamber & bore.

    the 6400 is fully chrome lined AFAIK.

    I still dont know the meaning of the G...I have one on my 6731 as well...

    Thanks. I appreciate the help. What I don't understand is the color of the chamber when compared to my other 2 rifles. My other 2 don't have the O and they look about the same (Flat shine inside the chamber, grey ring around the chamber, darker metal around that). I figured the chrome lined one should be shinier....no?
    Last edited by Redline; 07-22-09 at 15:30.

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    Quote Originally Posted by Redline View Post
    Thanks. I appreciate the help. What I don't understand is the color of the chamber when compared to my other 2 rifles. My other 2 don't have the O and they look about the same (Flat shine inside the chamber, grey ring around the chamber, darker metal around that). I figured the chrome lined one should be shinier....no?
    The chrome lining in the bore and chamber is not a shiny plating like you would see on "fancy" guns. It is just grey, like you see in the picture.

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    Quote Originally Posted by RAM Engineer View Post
    The chrome lining in the bore and chamber is not a shiny plating like you would see on "fancy" guns. It is just grey, like you see in the picture.
    Gotcha. Thanks.

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    hey redline,
    i think you put up a pic of chrome lined chamber.
    here is a pic of a chrome lined chamber BCM MID
    alongside your pic,
    what is the approx age and roundcount of your colt?

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