Hadn't heard this, but my initial reaction is its an obvious rat ploy to delegitimize a political nemesis.
@skeeter It's ok with me if you want to think that instead of looking it up.
It was also known as a MP3 and MP4,and before the full-auto ban you could actually buy one at a semi-reasonable price. You can still buy one if you can find a museum or collector that is willing to sell the one they have,but it will cost roughly a gazillion bucks. Some were captured by the US Army and found there way to the US,but most were seized by the Russians,and Russians being Russians,they are probably still in boxes in some warehouses in Siberia under armed guards,and will be for the next thousand years or so.
BTW,more than a few found their way to VN during the early days as both the Soviets and the US were arming THEIR VN allies with surplus weapons.