Crossword clue: of a firearm; not having rifling or internal spiral grooves inside the barrel
2 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).
Possible answers
a firearm that has no rifling
of a firearm; not having rifling or internal spiral grooves inside the barrel
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Similar clues
the cutting of spiral grooves on the inside of the barrel of a firearm
50% similar
→ grooving, rifling