<?xml version="1.0" encoding="utf-8"?><mads xmlns="http://www.loc.gov/mads/" xmlns:mods="http://www.loc.gov/mods/v3" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.loc.gov/mads/
mads.xsd"><authority><topic authority="http://AATesaurus.cultura.gencat.cat/aat/getty_en">percussion locks</topic></authority><related type="narrower"><topic>tube locks</topic></related><related type="narrower"><topic>scent-bottle percussion locks</topic></related><related type="other"><topic>gunpowder</topic></related><related type="other"><topic>percussion caps</topic></related><related type="broader"><topic>locks</topic></related><variant type="other"><topic>cap locks</topic></variant><variant type="other"><topic>cap locks, percussion</topic></variant><variant type="other"><topic>caplocks</topic></variant><variant type="other"><topic>locks, cap</topic></variant><variant type="other"><topic>locks, percussion</topic></variant><variant type="other"><topic>locks, percussion cap</topic></variant><variant type="other"><topic>percussion cap locks</topic></variant><variant type="other"><topic>percussion lock</topic></variant><variant type="other"><topic>percussion systems</topic></variant><variant type="other"><topic>systems, percussion</topic></variant> <note xml:lang="en"><![CDATA[ Firearm ignition mechanisms in which a fulminate or gunpowder priming powder is struck and explodes, thereby detonating the propellant. The most developed versions feature a percussion cap, fitted over a nipple screwed into the breech and pierced by a small hole that connects with the propellant; when struck by the hammer, the cap sends a small jet of flame into the propellant, igniting it. ]]></note></mads>