The Firing Line Forums

Go Back   The Firing Line Forums > The Hide > The Art of the Rifle: Semi-automatics

Reply
 
Thread Tools Search this Thread
Old January 8, 2013, 10:49 AM   #1
Skans
Senior Member
 
Join Date: November 20, 2008
Posts: 11,132
Colt "CMP" Standard Governmenment Barrel - need info...

I have an old Colt A2 upper receiver attached to a Colt standard government profile barrel, marked "CMP". Are all AR barrels in high demand right now, or is there something special about these old Colt government barrels that causes them to sell for a premium? What am I missing here?
Skans is offline  
Old January 8, 2013, 02:40 PM   #2
blfuller
Senior Member
 
Join Date: January 8, 2013
Location: Washington State
Posts: 246
The CMP indicates the barrel is chromed and magnetic particle inspected. This is a mil spec barrel and if in spec and not shot out it's a keeper.

Now pretty much everything is a premium on AR parts.
blfuller is offline  
Old January 8, 2013, 10:23 PM   #3
MMV.30
Member
 
Join Date: December 13, 2012
Posts: 40
If the barrel markings are C MP followed by 5.56 NATO the "C" indicates manufacturer (Colt) If the markings are C MP C 5.56 NATO the latter "C" indicates chrome plated chamber. If the markings have a "B" or "CB" after the MP then it indicates both chamber and bore are chrome plated. "MP" obviously stands for magnetic particle inspection. As a rule, most if not all Colt match barrels are never chrome plated being it alters bore diameter. The chrome plating was designed for military rifles to reduce erosion between cleanings.
MMV.30 is offline  
Old January 10, 2013, 10:23 AM   #4
Skans
Senior Member
 
Join Date: November 20, 2008
Posts: 11,132
I'll check the markings, but I'm positive the bore is plated - you can see the at the muzzle. Also, this is not a match barrel - when I purchased it about 15 years ago, the seller referred to it as a "government barrel".
Skans is offline  
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -5. The time now is 06:32 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
This site and contents, including all posts, Copyright © 1998-2021 S.W.A.T. Magazine
Copyright Complaints: Please direct DMCA Takedown Notices to the registered agent: thefiringline.com
Page generated in 0.04287 seconds with 10 queries