How Tim Bero went from making floppy disks to manufacturing semiauto .50-caliber machineguns, helping save Humvee crews' lives in the Second Gulf War and now, Multi-Caliber Survival Rifles, Pistols, and more. TNW Firearms first made a name for itself among American shooters 20 years ago in a really big way with a really big gun. That gun was a semi-automatic, full-size replica of the military M2 HB .50-caliber heavy machinegun, a weapon that's seen continuous use in all theaters of war from the 1930s to the present. That sexy belt-fed beast, known affectionately as the Ma Deuce in military circles,...