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Aiming a weapon is harder than it looks. Shooters need clear views of a distant object (the target) and a near one (the iron sight at the end of the rifle barrel) at the same time. But the eye can't quite pull this off, as a simple experiment shows: Point at a faraway house or storefront, then try to bring both your finger and the building into focus. One or the other will be blurry.

Idaho National Laboratory's innovative gunsight technology, the MicroSight, helps the eye solve this problem. The MicroSight, a disc smaller than a dime, brings both the target and the iron sight into simultaneous focus, giving marksmen a better sight picture. The new sight has national-security applications, as it could improve safety and performance for American . Millions of target shooters and hunters should also benefit.

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