How to Sight With a Matech 0GU83

Shooting with iron sights -- or without a telescope -- was the way rifles were used for centuries. Technology has improved the traditional iron sights to allow much better accuracy over a longer distance. The Matech 0GU83 is a standard-issue backup iron sight, or BUIS, for the U.S. Army for the troops in Iraq and Afghanistan. It fits on a picatinny rail and allows adjustments for ranging, or distance shots.

Things You'll Need

  • Shooting range
  • Bench rest
  • Targets
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Instructions

    • 1

      Attach the Matech to an MR/MRA1 carbine. Adjust the range knob so the left side sight cam line is even with the 300-meter mark. Alternatively, attach the Matech to an M16A4 rifle and adjust the sight cam line to match the half-notch mark between 300 and 400 meters.

    • 2

      Rest the rifle on a bench rest, and while looking through the sights, shoot at a target 25 meters away.

    • 3

      Note how close to the bull's-eye your bullet hit and in which directions it was off.

    • 4

      Adjust the front sight up or down to account for the elevation of the shot. If it was lower than the bull's-eye, adjust upward; if higher, adjust downward.

    • 5

      Adjust the BUIS windage adjustment knob to account for the left or right direction. If the bullet landed to the left, adjust the knob to the right. If the bullet landed right, adjust the knob to the left.

    • 6

      Shoot again at the target and see if the bullet comes closer to the bull's-eye. Keep adjusting the front sight and windage knob until the bullet is hitting directly on target.

    • 7

      Test the rifle at the 300-meter range and adjust the controls until the bullet is hitting directly on target at the 300-meter range.