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Definition of Underlug
1. Noun. (context: firearms) One of the locking lugs on a break-action firearm that extend from the bottom of the barrels under the chamber(s) and connect into the receiver bottom. ¹
2. Noun. (context: firearms) The metal shroud underneath the barrel of a revolver that surrounds and protects the extractor rod. ¹
¹ Source: wiktionary.com
Lexicographical Neighbors of Underlug
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