multi-choke
/ˈmʌltɪtʃəʊk/Shooting
noun
Each of a set of tubes with differing degrees of choke, which may be screwed into the muzzle (or muzzles) of a shotgun to produce varying degrees of barrel constriction, thus altering the spread of shot.
adjective
Designating a system using, or the facility to use, these tubes, or a gun with this facility.
Origin
1950s; earliest use found in The Lima News. From multi- + choke.