M1911

 is a gun.

Trivia

 * This gun used to be able to synergize with Barrel for the synergy.
 * The in-game description erroneously refers to the M1911's magazine as a clip.
 * The synergy is referencing character Vincent Vega's use of a M1911 in the film Pulp Fiction.
 * This gun is one of the six guns wielded by the Beholster.
 * If the synergy is active, and the player has the Cat Bullet King Throne, the orbiting gun will shoot a stream of bullets at the cursor location while the player dodge rolls.
 * The  synergy is likely a reference to the distinctive guitar notes prefacing each verse in "Fortunate Son" by Creedence Clearwater Revival. Both the song and all three guns are heavily associated with the Vietnam War.