Killdozer

"The Killdozer" was a nickname given to an improvised armored vehicle built by Marvin Heemeyer, a Granby, Colorado mechanic who became disgruntled with the local government after a zoning dispute. After failing to gain any ground with petitions, Heemeyer modified a bulldozer with home-made composite armor made from steel and concrete, armed with a Barret .50 rifle, a civilian version of the FN FNC, and a Ruger Mini 14. Heemeyer then proceeded to go on a rampage against the town of Granby, leveling several structures, the bulldozer surviving all attempts by police to disable it with firearms and even three explosions. The rampage finally ended when the bulldozer got stuck in the basement of a structure, and Heemeyer committed suicide with a handgun. The bulldozer was nicknamed "The Killdozer", although Heemeyer was the only one who was killed in the incident.

M82 Barret .50 cal, FN FNC, and Ruger Mini 14 ("Killdozer")
The Barret M82 is a semi-automatic .50 caliber rifle fed by a 10-round magazine, with a muzzle velocity of 853 meters per second and can penetrate 0.875 inches of armor at 100 yards. This means that, as the "Narco tank has 1-inch armor, the Barret could break through, but only at extreme close ranges. The Ruger and FNC are both 5.56mm semi-automatic rifles, with a 30-round STANAG magazine and a muzzle velocity of 965 m/s and the Ruger a muzzle velocity of 945 m/s and a 10-round magazine.

Dozer Blade
The "Killdozer's" primary close-range weapon was the bulldozer's blade, capable of knocking down buildings and damaging vehicles when coupled with the raw power of "Killdozer's" engine.