Today’s DTIC document – from June 1973 – covers the early development of the 5.56mm FABRL cartridge, which is one of my favorites. For those unfamiliar with it, the 5.56mm FABRL (Frankford Arsenal and Ballistics Research Laboratory, later rationalized to “Future Ammunition for Burst Rifle Launch”) was a cartridge from the early 1970s intended to […] Read More …

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