Russian troops lose control of YakB-12.7 rotary cannon during training

Russia's YakB-12.7 that refused to work on the ground

A video spreading like wildfire shows the exact moment a mobile fire team of the Russian army loses control of a YakB-12.7 rotary machine gun during a training exercise. The scene is as spectacular as it is predictable: a weapon designed to hang from a Mi-24 helicopter, with brutal angular recoil, mounted without further ado on a ground platform. The result is that the operator is thrown backwards while the weapon swings in an uncontrolled arc.

The YakB-12.7 is a four-barrel rotary cannon in 12.7 mm caliber, developed specifically for aviation. Its original role is to sweep targets from the air, where the helicopter itself absorbs part of the recoil. When adapted to a ground vehicle without the proper mounts, the recoil torque defeats any attempt at manual control. It is not a design flaw: it is a conceptual error.

Ironies of the trade: while the recruit tried to tame the beast, the instructor —according to the voiceover— warned him to go "gently". The result was exactly the opposite. The video has gone viral on military channels, and the comments spare no sarcasm: "They should ask FPS Russia for advice", jokes one enthusiast, referring to the well-known weapons-testing channel.

It is not the first time aircraft weaponry has been used on the ground with comic or tragic results. The YakB-12.7 case shows that physics does not forgive: angular recoil of several hundred newtons cannot be held back with biceps, however well trained the operator may be. The lesson, obvious as it is, still makes for epic viewing.