Flintlock/ˈflɪntlɑːk/ Definition 1 of 2Pro Tip 1/3Historical Weapon Used mainly to refer to firearms from the 17th to 19th centuries. The museum displayed several flintlock guns from the Revolutionary War. Pro Tip 2/3Not Modern Flintlock is considered outdated technology and isn't used in modern firearms. Unlike modern rifles, flintlock guns require manual reloading. Pro Tip 3/3Cultural Depictions Often depicted in movies and literature set in historical times. Pirates in the film were armed with flintlock pistols.