A s far as military and civilian firearms are concerned, people talk about little else other than 5.56 NATO versus .223 Remington ammunition. It might seem like the actual differences between the ...
The M855A1, a 5.56 mm Ball ammunition, is an enhanced performance round for today’s combat and training environments. It works with the M4 Carbine, the M249 machine gun, and the H&K and M16A2 ...