Host Paul Shull has been invited by his friend, a military enthusiast and mechanic, to assist him on a once in a lifetime project: to rebuild the incredibly rare Achilles Tank Destroyer.

With the help of some old and new collector friends, host Paul Shull sets out on a cross-country trek to try and settle an old argument: what was the best sniper rifle of WWII?

Host Paul Shull takes a journey through Tennessee, Kentucky and Oregon to find and fire the deadliest pieces of light field artillery of the Civil War: the 10lb Parrott and the 3-inch Ordnance Rifle.

To military history collectors, it's the rarest of all machine guns. The FG-42 assault rifle, designed specifically for German World War II paratroopers, is so rare that they now sell for thousands of dollars at auctions.

It's fast, ferocious, powerful, and ultra-rare. The mobile machine gun called the Quad 50 was one of the most punishing weapons of World War II, but it's rarely seen today.