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There have been similar endeavors in the past, one of
which I developed myself, but this one is unusual in that it is
adapted to the M16 rifle, hence the finished cartridge will work
through the magazine system of the M16. J.D. assures me that when
the piece is fitted with the proper noise suppresser, a full
magazine of 30 rounds may be sprayed out the muzzle, with good
short range efficiency in dead silence.