Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun A 5.56 mm-caliber, gas-operated, clip-fed carbine derived from the M-16 but with a shorter barrel, used chiefly for special operations and combat at close quarters.

Etymologies

from The American Heritage® Dictionary of the English Language, 4th Edition

[M, military classification.]

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Examples

  • I think there is not a single thing that anyone can do about this because fact is a hige contract was awarded to Trijicon and they manufacture the best sight for the M-4 platform that is available.

    Trijicon Trouble 2010

  • Now, a well-stocked, well-secured armory has row after row of U. S.-purchased M-4 carbine assault rifles — the same kind of rifles used by many U.S. troops in Iraq and Afghanistan.

    U.S. struggles to track arms in Afghanistan 2010

  • It's got the colapsible stock (ie M-4), pistol grip, 25 rnd mag, and rail top.

    Tactical .22 2009

  • I think there is not a single thing that anyone can do about this because fact is a hige contract was awarded to Trijicon and they manufacture the best sight for the M-4 platform that is available.

    Trijicon Trouble 2010

  • The rifle is sey up like an M-4 (.223 by the way).

    Tactical .22 2009

  • The rifle is sey up like an M-4 (.223 by the way).

    Tactical .22 2009

  • The four men turned, aiming their M-4 carbines at him.

    Gideon’s war Howard Gordon 2011

  • Well maybe we need the defense industry pay our troops some money from there profits. person making the M-4 rifle gets around 20 a hour soldier caring the M-4 into harms way makes about .78 cents a hour just dont seem right to me!!!!

    Think Progress » Axelrod Struggles To Explain Why Obama’s Spending Freeze Doesn’t Include Defense Funding 2010

  • Meyer aimed his M-4 rifle and shot the insurgent in the head.

    Medal of Honor recipient saved 36 lives during battle 2011

  • The more advanced design was based on a German machine called the G-4 or M-4, which incorporated four rotors in a single centrifuge.

    Fallout Catherine Collins 2011

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