The 5.56×45mm NATO (official NATO nomenclature 5.56 NATO) is an intermediate cartridge family developed in Belgium by FN Herstal. It consists of the SS109, SS110, and SS111 cartridges. Under STANAG 4172, it is a standard cartridge for NATO forces as well as many non-NATO countries. It is derived from, but is not identical to, the .223 Remington cartridge.

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    5.56 M855 green tip, M193 Trade for 9mm defense or 300 blk

    Looking to trade some M855 Winchester green tip 5.56 62 grain or regular m193 5.56 for 9mm hollow or green tip or 300 Blk or both if possible! Thanks
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