The Hoppe's BoreSnake Viper takes the technology of the original BoreSnake and increases the cleaning power by adding an additional set of brushes. This one-pass bore-cleaning solution uses integrated bronze brushes to scrub out carbon fouling, while the tail clears the barrel of loose debris with a surface area 160x larger than a standard patch.

An integrated cone-shaped bore guide sits on the leading end, and the brass weight is stamped with the caliber. The BoreSnake Viper Den adds a T-handle for easier pull-through and a reusable carrying case to protect your BoreSnake in a range bag or backpack. For .338 and .340 caliber rifles.