For most shooters the difference between .223 Remington and 5.56×45 NATO is minor, but it matters because 5.56 is typically loaded to higher pressures and uses a slightly different chamber leade.

Check out the full Call of Duty Black Ops 7 patch notes, including details on the new features coming to Warzone and Zombies.

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 rifles.

Isabel O’Brien is an experienced business journalist who specializes in private equity, infrastructure, and financial misconduct. Delmaine Donson / Getty Images While many Americans consider $1.5 ...

Compiling a stash of emergency-preparedness items used to be a task many of us kept on the back burner — something we knew was important and we’d get to eventually. But eventually, we now know, might ...