Shooter

wiktionary

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From Middle English schoter, schuter, schotter, scheter, schetare, scheotere, from Old English sċēotere(“shooter”), equivalent to shoot +‎ -er. Compare Dutch schieter, schutter(“shooter”), German Schießer(“shooter”), Swedish skjutare, West Frisian sjitter(“shooter”).

etymonline

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shooter (n.)

Old English sceotere "one who shoots," agent noun from shoot (v.). As a type of gun from 1812; as a small alcoholic drink, 1971. Shootee is attested from 1837.