The guys are in southern California, Sean assesses a 16th century wheellock and then heads to the testing range to see if this ancient mechanism can still light a spark.

A 17th century bronze cannon has host Sean Rich so fired-up, he makes a uncommon deal, offering the seller $8000 on the spot.

The guys head to Southern California for an extravaganza of military collectables. Jim shoots an 1873 Colt .45 revolver, an iconic piece of Americana from the Wild West.

The guys head to Colorado for an extravaganza of military collectibles; shooter fires a MAC 10 submachine gun, the iconic weapon of Hollywood movies like "Pulp Fiction."

Sean and the guys are in Colorado Springs doing what they do best: finding the best military items and weapons for their auction. Shooter examines a Kel-Tec RFB .308 rifle and carries it to the range to see if it works.

The guys head to Southern California for an eclectic auction spanning the centuries and continents. Sean examines a pair of 18th Century dueling pistols and the heads to the shooting range.

The guys head to Houston to fire off a German MG-42 machine gun from World War II. Known as "Hitler's Buzzsaw", the MG-42 fired 1,200 to 1,500 rounds per minute and killed thousands of Americans in Normandy.

The Lords of War inspect a rare piece of WWII memorabilia that couriers used behind enemy lines. If it's authentic, it could be valued at $18,000. And one seller, disappointed to learn his Japanese katana sword was not actually Made in Japan, is in for a big surprise.

Sean and the Lords of War are just outside of Colorado Springs, Colo., on the hunt for the best military items and collectibles for their auction. Shooter comes across a Browning BAR rifle, first used in WWI, and heads to the shooting range to see if the weapon still fires.

A pocket pistol like the one John Wilkes Booth used to assassinate President Lincoln.

Sean and the team are in Texas to track down top-notch military pieces for their upcoming auction.

In Fla., Sean and Hammer meet a seller who grew up playing with what could be a Spanish helmet.

A blunderbuss pistol from the American Revolution; a Bowie knife; a 1907 Winchester.

Shooter is determined to get an MP5 submachine gun into the auction; Jim finds a Colt 45-caliber.

A 1915 Vickers; conquistador stirrups; American flag made by Polish POWs in a concentration camp.

Shooter gets really excited when he comes across an M2 machine gun, which could be very valuable.