Likely because some general or congressperson's retarded son in law works for a company that came up with a "better" weapon.

How much wheel greasing did it take to switch everyone to the pixelated BDUs, only to throw em overboard 6-7 years later?
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Thinking of cracked-out and/or tweaking whores getting their throats and asses brutalized for the next hit makes me hard. --Rear Admiral