Made by Ammo ShotShell XL

A purist won’t water down whiskey with ice, but who’s going to keep it in the fridge? The Made by Ammo ShotShell XL ($100) is the stainless steel shot that can be kept in a corner of the freezer until it’s time to kick back. The ShotShell XL then chills a drink by up to twenty degrees for around twenty minutes, just right for smooth drinking. [source]