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1/14/2014 6:05:59 PM EDT
Folks, I picked up an M16A1 parts kit several years back and just pulled it out to take a look at it.  It's mostly Colt, upper and bolt carrier, but the barrel's got me puzzled.  It's a standard A1 thin profile, with a late (72-82) Colt forged FSB ,and is obviously chrome lined bore and chamber but it has no marking save one - a little tiny "C" on the underside just in front of the bayonet lug.  I've looked on retro black rifle and couldn't find anything on this.  I've checked every part of the barrel that isn't covered by the FSB or inside the upper receiver.  Anyone out there have an idea?  Here's a photo -



Since there are NO other markings I was just curious.
1/14/2014 6:37:13 PM EDT
[#1]
Quoted:
Folks, I picked up an M16A1 parts kit several years back and just pulled it out to take a look at it.  It's mostly Colt, upper and bolt carrier, but the barrel's got me puzzled.  It's a standard A1 thin profile, with a late (72-82) Colt forged FSB ,and is obviously chrome lined bore and chamber but it has no marking save one - a little tiny "C" on the underside just in front of the bayonet lug.  I've looked on retro black rifle and couldn't find anything on this.  I've checked every part of the barrel that isn't covered by the FSB or inside the upper receiver.  Anyone out there have an idea?  Here's a photo -

<a href="http://s1023.photobucket.com/user/rudd2336/media/100_2282_zps6ddc0e5c.jpg.html" target="_blank">http://i1023.photobucket.com/albums/af351/rudd2336/100_2282_zps6ddc0e5c.jpg</a>

Since there are NO other markings I was just curious.
View Quote


recent production citadel barrel.
1/14/2014 7:07:21 PM EDT
[#2]
So, I take it this is a civilian barrel and not a replacement unit?  Is that correct?

Disregard.  I looked them up and some good stuff, some not so good.
1/14/2014 7:36:58 PM EDT
[#3]
Quote History
Quoted:
So, I take it this is a civilian barrel and not a replacement unit?  Is that correct?

Disregard.  I looked them up and some good stuff, some not so good.
View Quote


yeah commercial made barrel for the civilian market.  came along much later after the military transitioned off that profile.
1/14/2014 8:34:17 PM EDT
[#4]
Thanks for the G2 on this.  Had me stumped.
1/14/2014 8:54:11 PM EDT
[#5]
I had a Citadel barrel on a 602 clone.  It shot as well as a Colt, but wasn't chrome lined.  Has 1/9" twist, so can shoot up tp 69 grain bullets.  Retro 1/12s can only go up to 55 grains.
1/14/2014 9:08:15 PM EDT
[#6]
I've never seen one of the Citadel's that was chrome lined.  All were non chrome.
1/15/2014 8:22:52 AM EDT
[#7]
Folks, I've got to correct myself.  Looking at the barrel in natural light I don't believe this is chrome-lined.
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