Barrel
Barrel noun - A tube through which a bullet travels when a gun is fired.
Both words in one sentence
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The SMG in Red Faction is an MP5K, redesigned as an over / under weapon with twin magazines; the cocking handle tube is a second barrel and the barrel has a second cocking handle.
Source: Cool Guns / Submachine Guns -
The 1200 comes in hunting and defender versions, with a longer barrel and limited shell capacity in the former, and a longer magazine tube and shorter barrel for the latter.
Source: Cool Guns / Shotguns - On the Real Life SPAS-12 the in-game shotgun is supposed to be, the "second barrel" is in fact the tube magazine.
Source: Secondary Fire
Cite this Source
Tube and Barrel. (2016). Retrieved 2026, August 10, from https://thesaurus.plus/related/barrel/tube
Barrel & Tube. N.p., 2016. Web. 10 Aug. 2026. <https://thesaurus.plus/related/barrel/tube>.
Tube or Barrel. 2016. Accessed August 10, 2026. https://thesaurus.plus/related/barrel/tube.
Google Ngram Viewer shows how "barrel" and "tube" have occurred on timeline