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Posted: 1/28/2006 1:14:48 PM EDT
Newbee with a possible dumb question. I am looking to buy a Colt Match Target M4 model 6400C. The lower says .223 Cal. Can I still shoot 5.56 ammo with it?
Link Posted: 1/28/2006 1:19:33 PM EDT
Link Posted: 1/28/2006 1:44:43 PM EDT
[Last Edit: 1/28/2006 2:03:06 PM EDT by PocketG]

Originally Posted By Troy:
Markings on the lower receiver are irrelevant. You could put a different upper on your lower chambered for any of at least 3 dozen calibers, and the lower would still say ".223".

Your 6400C comes with a 5.56-chambered, fully-chrome-lined barrel.


I have the MT6400c, I thought only the chamber was chrome. I had the stamp codes, I can't find them now but the C stamped on the barrel meant chromed chamber, MP means magnetic particle tested. C and another letter meant chromed lined barrel. Correct me if I'm wrong because I hope I am because I would like to have a chromed lined barrel on my Colt. On a short note , I like it a lot. Theres no disappointment with it at all. I have about 5 k rounds through it using Labelle mags and genuine Colt mags and not a problem with those.

Link Posted: 1/28/2006 2:04:10 PM EDT
Link Posted: 1/28/2006 2:22:01 PM EDT

Originally Posted By Troy:
The MT6400C, and perhaps one other current "civilian" model, are the only ones to come with a fully-chromed barrel. The 6400 is the "M4 Carbine" and also comes with a push-pin instead of pivot screws.


Chromed line barrel, yeahhhh.......Thanks
Link Posted: 1/28/2006 6:16:51 PM EDT
Thanks for the info. I'll shop around for one.
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