50 BMG Pistol: Kiss Your Wrists Goodbye

50 BMG Pistol: Kiss Your Wrists Goodbye
The Thunder .50 BMG pistol

Meet the Triple Action Thunder .50 BMG pistol by Triple Action, LLC.

It may look like a prop from a bad science fiction movie, but this unique single-shot pistol is 100% real. Surprisingly, the recoil is actually not as severe as many would assume thanks to a high efficiency muzzle brake and nitrogen recoil controller shock absorption system.

A Hand Cannon Like None Other

The .50 BMG pistol first started turning heads at SHOT Show 2004 where a prototype was found on display at the Triple Action, LLC booth. The booth also featured a few range videos where the Thunder could be seen in action.



Triple Action, LLC out of Logan, Utah was interested in producing more of these bad boys as a marketing trick to promote their recoil reduction systems. Sadly the company is gone, but the pistol still remains. This hand cannon, and we do mean cannon, fires a .50 cal BMG out of the palm of your hand.



  • Caliber: .50 BMG
  • Action: Scissor breach with separate cocking lever and case ejector
  • Capacity: Single round
  • Weight: 12 lbs empty
  • Barrel: 13.2″
  • Overall: 16.9″
  • Trigger: 1 to 12 lbs (factory set)

History Of The .50 BMG

While a .50 caliber pistol may seem a bit large for everyday use, a 1/2″ diameter round was completely normal in the flint-lock era. After the development of smokeless powder, most pistols began using smaller bullets fired at higher velocities and the .50 caliber became less and less common. Rifles and machine guns, on the other hand, continued to experiment with larger rounds to meet the demands of mechanized warfare.

The .50 BMG, aka 12.7x99mm NATO, was developed in by John Browning during World War I. The legendary firearm manufacturer recognized the need for an anti-aircraft weapon near the end of the Great War. He based his idea on the .30-06 Springfield cartridge and the M1917 machine gun.

M1917 Browning Machine Gun (image source; Wikipedia)

The result was a new .50 caliber round that would be fired from the M1921 Browning machine gun, a water-cooled machine gun that would stay in service until 1933 where it was replaced by the M2 air-cooled Browning machine gun.

.50 BMG Cartridge (image source; Wikipedia)

The .50 BMG (Browning Machine Gun) cartridge has remained in service by NATO and many other nations since World War II. Originally designed for anti-aircraft purposes, the .50 BMG would later be modified for use with anti-material weapons.

Cartridge Specs

  • Parent Case: .30-06
  • Bullet diameter: .510″
  • Bullet weight: 647 gr – 800 gr
  • Neck diameter: .560″
  • Shoulder diameter: .735″
  • Base diameter: .804″
  • Case length: 3.91″
  • Overall length: 5.45″
  • Max pressure (EPVAT): 60,481 psi
  • Max pressure (CIP): 53,664 psi