Marines buying killer machinegun scopes

Strategy Page:

The U.S. Marine Corps is spending $33 million to equip many of its M240B 7.62mm machine-gun with an optical scope from Trijicon. This firm supplies a wide range of rifle and machine-gun scopes for police and military customers. Trijicon has an 8x48 machine-gun scope that weighs less than half a pound and retails for $2,500. This scope has a red chevron aiming point, bullet drop compensator and two-eyes-open aiming capability. The sight does not need a battery and is waterproof. The marines will get 25 of these scopes within a year, and the rest within the next four years.

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I think the method with the old M60 was to watch the tracer rounds. The theory behind the new scope is that it puts rounds on the enemy with the first shots and does not give them time to dive for cover.