38 Special

 is a gun. It can be fired very rapidly after dodge rolling.

Trivia

 * This gun used to be able to synergize with Barrel for the synergy.
 * The 38 Special is used by various detectives in a wide range of films and other media, hence the description.
 * This may be a reference to the Max Payne series of games, where the protagonist, a detective, slows down time when dodging, allowing him to fire faster and more accurately.