Black Widow's Bite



Black Widow's Bite are prototype laser weapons that fire from two shaped bracelets for the Black Widow.

Iron Man 2
The black widow uses the Widow's bite when she reveals her S.H.I.E.L.D. agent identity and breaks into Justin Hammer's factory, along with Happy Hogan. Shes uss them killing some of Hammer's agents.

The Avengers
Black Widow uses them against Loki and the Chitauri forces in Manhattan.