Quantcast
  1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Question on what Bushmaster Model I Bought?

Discussion in 'Rifle Country' started by ZombiesAhead, Mar 20, 2008.

Thread Status:
Not open for further replies.
  1. ZombiesAhead

    ZombiesAhead Member

    Joined:
    May 10, 2007
    Messages:
    460
    I bought this - very happy with it but unsure about some specifics:

    [​IMG]

    The salesman wasn't sure if this was the heavy barrel model of Patrolman's Carbine. I think it is the HBAR but I'm not sure. Look at the barrel and the taper on the "Patrolman's Carbine."

    Patrolman's Carbine:
    http://www.bushmaster.com/catalog_xm15_BCWA3F16M4.asp
    ...16" barrel is chrome lined in both bore and chamber for long wear life and ease of maintenance.

    Heavy Barrel Carbine:
    http://www.bushmaster.com/catalog_xm15_BCWA3F16.asp
    16” Heavy Profile ChromeMoly Vanadium Steel Barrel - Chrome lined in both Bore and Chamber for easy chambering, long life and quick clean-up.

    Assuming it is the HBAR, what is the difference between my "ChromeMoly Vanadium Steel Barrel - Chrome lined in both Bore and Chamber" and the other rifle's "chrome lined in both bore and chamber"?

    This seems nonsensical. Bushmaster tells me that the Patrolman's Carbine is "chrome lined in both bore and chamber" but my HBAR is a "ChromeMoly Vanadium Steel - chrome lined in both bore and chamber."

    Huh? :scrutiny: Any ideas? Where does the "ChromeMoly Vanadium" fit in if both rifles have chrome-lined bores and chambers?
     
  2. Magnuumpwr

    Magnuumpwr Member

    Joined:
    Feb 28, 2005
    Messages:
    1,032
    Location:
    Southeast Texas
    ChromeMoly Vanadium deals with the quality of the barrel itself. As far as your question about it being a patrol or HB carbine, your pic doesn't have enough lighting to tell.
     
  3. ZombiesAhead

    ZombiesAhead Member

    Joined:
    May 10, 2007
    Messages:
    460
    So is ChromeMoly vanadium a better "type" of chrome lining? Or is this what the mass of the barrel is made of and then a generic/standard "chrome" is used to line the inside?

    Sorry about the bad picture - I was trying to show that the barrel is the same diameter all the way down into the sight block. As I looked more and more at it I've come to the conclusion it is the heavy barrel - the other 16" non-dissipator models all have a taper before the front sight post (originally designed to mount a grenade launcher I believe).
     
  4. mc223

    mc223 Member

    Joined:
    Jun 18, 2006
    Messages:
    860
    Location:
    Just Down the Road
    The barrel material is ChromeMoly Vanadium Steel. The internals of the barrel are chrome plated. Wiith the obvious difference of stainless, all Bushmaster barrels are ChromeMoly Vanadium Steel.
    It looks like the A3 heavy barrel carbine to me.
     
  5. Quack

    Quack Member

    Joined:
    Jan 31, 2003
    Messages:
    1,400
    Location:
    Cleveland, OH
    http://www.bushmaster.com/faqs.asp#22

    "...but we use mil. spec. 4150 ordnance steel."

    and...

    http://www.ar15.com/lite/topic.html?b=2&f=138&t=148891

    "Table One (listed above) shows three types of chemical compositions and ranges for Mil-Spec 4150 barrel steel as defined by 11595.
    ORD4150, ORD4150-Resulferized, and Chrome-Moly-Vanadium (CMV) should not be confused with the generic term of a Chrome Moly barrel. My opinion and the opinion of the US Government (as defined by the Mil-Spec) is that one of the three is not better than the others. They are all they same and are all 11595 (Mil-Spec) barrel steel. In some descriptions used by steel companies I have seen the Grade of CMV further listed as 41V45, which is a bit more descriptive, but probably just add confusion in this context."
     
  6. Bobarino

    Bobarino member

    Joined:
    Mar 12, 2003
    Messages:
    1,625
    Location:
    western Washington
  7. TheDisturbed1

    TheDisturbed1 Member

    Joined:
    Dec 28, 2006
    Messages:
    620
    Location:
    Interior Alaska
    that looks like my XM15-E2S :)

    EDIT: Bobarino beat me to it :p

    And they are great guns IMO ;)
     
    Last edited: Mar 21, 2008
Thread Status:
Not open for further replies.

Share This Page