Every once in a while you see something really remarkable at the SHOT Show Media Day at the Range event. In this case, the coolest thing I saw was the suppressed belt fed Browning 1919 on the far end of the range. The fact that a suppressed M1919 exists is cool enough, but how they made it happen is equally interesting.
The Browning M1919 design is the smaller version of the Ma Deuce fifty caliber machine gun still in use to this day. In both designs the barrel itself reciprocates, moving backwards to provide the initial force to send the bolt rearwards to cycle the action. Therefore the weight of the barrel is extremely important — get it too heavy or light and the whole system goes out of whack.
In this case, the barrel profile has been reduced in order to allow the gun to cycle properly. What once was a baseball bat diameter barrel is down to a more reasonable pool cue, and the weight saved has been moved to the silencer out front.
In the end, the finished product is pretty damn amazing. It works remarkably well, and despite there being a good chunk of moving metal involved it was very quiet. Impressive to say the least.