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AR15.COM
3/14/2004 10:03:58 PM EDT
I'm a little confused, maybe you can help me.
Are all colt post ban 1x9 barrels non chrome lined?   Are any post ban Colt barrels chrome lined?   Is only the chamber chrome lined?
how would you be able to tell if a barrel is chrome lined?
3/15/2004 6:50:05 AM EDT
[#1]
Are all colt post ban 1x9 barrels non chrome lined?   I've seen pre-ban conversion kits that were Chrome Lined

Are any post ban Colt barrels chrome lined?  A2 & M4 are, iIrc.

Is only the chamber chrome lined? on some, yes

how would you be able to tell if a barrel is chrome lined? After clearing wepaon, look down muzzle.  If you see a dull silver coloured around the muzzle, she's chrome lined
3/15/2004 5:49:40 PM EDT
[#2]
Of all the models Colt currently sells, only the 6400c (M4 model) has a chrome-lined chamber AND barrel.  All the others (6601, 6700 & 6731) just have a chromed chamber.  

I believe that the 6400 & 6601 have 1:7 twist  while the 6700 & 6731 have 1:9 twist rifling.
3/20/2004 1:31:40 PM EDT
[#3]
My MT6601 has a 1x7 twist and a chrome chamber only.

Got it in 1997
3/20/2004 1:51:50 PM EDT
[#4]
MT6400C (M4) & MT6551 (A2) have chrome lined BORES & CHAMBERS, but are MILSPEC 1/7
3/30/2004 2:16:48 PM EDT
[#5]
Are you sure about the MT6551 having a chrome lined barrel? I was under the impression that all post-ban Colts (with the exception of the MT6400, which I love dearly) have chrome lined chambers only.

If the the MT6551 has a chrome lined barrel, well, that's exactly what I've been looking for! A post-ban Colt with a chrome lined 1/7" 20" A2 profile barrel! Oh joy, with newly kindled rapture warm!

Well, that's a bit much, but suffice to say that I'd be very happy if it were so. Doesn't Hoplite sell the MT6551?

Thanks,
Brewer
3/30/2004 3:22:04 PM EDT
[#6]
Colt no longer makes the MT6551, Sporter Target.  I'm not sure when they quit making them but you may be able to find a used one somewhere.  Also, I owned a pre-ban Sporter Target and I was not aware that they made any post-bans in that model.
3/31/2004 4:42:11 AM EDT
[#7]
Shoot! I knew the MT6551 wasn't a cataloged item anymore - I guess I was hoping against hope that there would still be some in the pipeline. Hoplite used to catalog them - anyone know if they still have any?

Thanks!
brewer
3/31/2004 4:51:41 AM EDT
[#8]
Just checked the KY Imports site - they list the MT6551 with Government weight barrel. The price is reasonable. Does anyone know for sure if the barrel on these is chrome lined?

Thanks!
Brewer
3/31/2004 6:10:10 AM EDT
[#9]
If it's a gov't profile barrel then it SHOULD chrome-lined.
4/4/2004 8:51:54 AM EDT
[#10]
The MT6551 was made in a postban form, but I'm having an extreme level of difficulty finding one.

I'm also wondering if the front pivot pin was a small hole, or large hole - I would wish to drill it for a pushpin if I could ever find one.
4/4/2004 12:57:11 PM EDT
[#11]
I was at a local shop 2 years ago and bought their only MT6551. They also had the MT6530 lightweight.  They both used the small front pivot pin holes, with the screws in place rather than retained pins. The MT6551 had the drilling to add the retaining pin and spring, which I did right on. The MT6530 did not have the drilling done, though.
 I guess as has been said, it is a duke's mix on what you can find.