As nouns the difference between flintlock and frizzen
is that
flintlock is an early type of firearm, using a spring-loaded flint to strike sparks into the firing pan while
frizzen is an l-shaped piece of steel hinged at the rear used in flintlock firearms, positioned over the flash pan so to enclose a small priming charge of black powder next to the flash hole that is drilled through the barrel, such that when fired the flint scraps it so as to create a spark.