The Firearms Forum banner

1 - 1 of 1 Posts

·
Registered
Joined
·
5,114 Posts
Discussion Starter #1
Moskovskyya
Member
Posts: 22
(12/23/01 8:13:03 pm)
Reply | Edit | Del All AR black rifle question
--------------------------------------------------------------------------------
I have an AR rifle with barrel markings C MP 5.56 NATO 1/7.
does anyone know what the "MP" means?

Thanks

Tac401
Administrator
Posts: 3092
(12/23/01 9:40:14 pm)
Reply | Edit | Del
ezSupporter
Re: AR black rifle question
--------------------------------------------------------------------------------
Mosk,

All Colt barrels are marked that way, I don't remember
the meaning of the MP but the NATO 1/7 means 1-turn
in 7-inches regarding rifling in the barrel, the 1-in-7 is
the nato standard for using the current issue 62-grain
steel core bullet, most commercial AR's now come with
a 1/9 barrel for more bullet stablization and to effectively
fire most any .223 weight bullets.

I'm sure someone will be here to give you the meaning
of the MP and jar my memory lol!
The Firearms Forum Vietnam Memories Bulletin Board Contact Administrator

M4A3
Member
Posts: 1
(1/16/02 9:19:36 pm)
Reply | Edit | Del Re: AR black rifle question
--------------------------------------------------------------------------------
MP stands for 'Magnetic Particle' non-destructive testing...for more detail on "black Rifle" stamping ID see the below:

www.biggerhammer.net





Edited by: bondai at: 1/16/02 11:28:27 pm
 
1 - 1 of 1 Posts
Top