齒鋸 (開膛手)是一種近戰武器有着旋转钢制锯齿片，可以单手使用。Invented by the Ripper™ company, the first Ripper以小型能量电池包供能，though later models were self-powered.这把武器可以轻易撕裂血肉与骨骼。
Developed before the Great War, the Ripper was likely originally designed as a power tool for cutting foliage and butchering meat, before being adapted as a devastatingly powerful melee weapon used by military organizations, such as the Enclave, Brotherhood of Steel, etc.
The first Ripper, a Ripper vibroblade created by Ripper™. 有着一系列高频运动着的钢制锯齿，but only for a short period of time due to excessive energy consumption. 带给这把武器轻易撕裂血肉与骨骼的力量。A smaller, more portable version also exists.
An unnamed self-powered model of the Ripper, used by the East coast force of the Enclave. It uses a self-sustained power supply, and thus doesn't require any additional fuel, allowing it to be used for long periods of time without needing to be recharged. It also ignores Damage Resistance as well as Damage Threshold.
Small teeth Ripper
An unnamed self-powered model of the Ripper with smaller teeth, resembling a large kitchen knife. Like the Military Ripper, it also has unlimited power, and can even be superheated to increase damage.
A larger, two-handed version of the Ripper, resembling an enormous claymore sword. Like the small teeth Ripper, it requires no recharging and can be superheated to increase damage.