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Image: U.S. Marine Corps photo by Cpl. William Chock…

URG-I

URG-I

U.S. special operations M4A1 upper receiver upgrade.

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Wikipedia views per dayLast 30 days 2,825

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Readers' pathsAug 2026 – Oct 2026

Readers go next to

Share of the 1,417 clicks on its links

  1. Close Quarters Battle Receiver

    Carbine.

    15%

  2. 5.56×45mm NATO

    Service rifle cartridge.

    14%

  3. Mk 12 Special Purpose Rifle

    American designated marksman rifle.

    9.8%

  4. M4 carbine

    American assault rifle.

    8.8%

  5. M-LOK

    Firearm rail interface system.

    8.3%

  6. United States Army Special Forces

    Special operations branch of the U.S. Army.

    6.4%

  7. 75th Ranger Regiment

    Elite US Army light infantry unit.

    6.3%

  8. United States Army Special Operations Command

    Army component of the U.S. Special Operations Command.

    4.2%

  9. Naval Surface Warfare Center Crane Division

    Division of the U.S. Naval Surface Warfare Center.

    3.7%

  10. Air Force Special Operations Command

    Air Force component of the U.S. Special Operations Command.

    3%

Readers come from

Share of the 2,083 readers arriving from another article

  1. M4 carbine

    American assault rifle.

    79%

  2. Close Quarters Battle Receiver

    Carbine.

    16%

  3. M-LOK

    Firearm rail interface system.

    2.5%

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