These sheriffs of Wall Street carve a notch on their gun barrels for the likes of Martha Stewart, Raj Rajaratnam, and their ilk.

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But the propellant that launches projectiles from gun barrels is not.

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They reject police requests to etch barrels to uniquely mark each cartridge fired by a particular gun.

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The gun is designed to fire standard handgun rounds, using interchangeable barrels for different calibers of ammunition.

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