Deuce-deuce - Idioms by The Free Dictionary
slang A .22-caliber gun. "Deuce" is a slang term for "two." Watch out for that guy—he's got a deuce-deuce on him.
n. a .22-caliber pistol. (Streets.) My buddy popped his uncle with a deuce-deuce.
References in periodicals archive
Clients who might get upset about me shooting their animal with a rifle have no qualms about me finishing it off with the diminutive deuce-deuce
More specifically, Cochi'an's been roiling a succession of deuce-deuce
and larger rims.