The cool new and extremely heavy-duty ShotShell XL from Made By Ammo is one of the most hardcore whiskey glasses ever constructed. It's machined from a solid piece of stainless steel round bar and features textured knurling for an easy grip when wet, weighs nearly a pound, holds 4.5 fluid ounces and is 100% dishwasher safe. You don't need to worry about watered down drinks from melting ice when you imbibe from a metal glass either. Just keep it chilled in the freezer in between rounds and when ready to consume, just pour in your favorite poison to quickly chill it down by about 20 degrees for nearly 20 minutes.
If shots are more your thing, Made By Ammo also makes equally cool Stainless Steel Shot Glasses as well.