5.56 X 45mm VS 5.56mm (Summarized)
5.56 X 45mm VS 5.56mm (Summarized)
A 5.56 x 45 cartridge is a bottleneck and rimless intermediate cartridge.
A 5.56 x 45 cartridge is a bottleneck and rimless intermediate cartridge.
A 5.56 x 45mm round chambered in the standard M193 cartridge.
A 5.56 x 45mm round chambered in the standard M193 cartridge.
M855 is round with a full metal jacket.
M855 is round with a full metal jacket.
56.56mm NATO was originally chambered for M16 rifles.
56.56mm NATO was originally chambered for M16 rifles.
A 5.56 NATO round is 5.56 X 45.
A 5.56 NATO round is 5.56 X 45.
5.56 NATO isn't 5.56 X 45.
5.56 NATO isn't 5.56 X 45.
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