On the downside, this weapon is very slow to reload. Like other ranged weapons, the Pistol has reduced accuracy when on horseback, but the targeting reticule stays perfectly still while aiming. However, the Flintlock is wildly inaccurate and the bullet cannot be seen in order to adjust one's aim, making this weapon very difficult to use at range. It is a very powerful weapon that uses the hidden Firearms proficiency and can shoot bullets at an incredible velocity, faster than any arrow.
It uses cartridges as ammunition, just like bows use arrows or crossbows use bolts. The Flintlock Pistol is a hidden weapon, inaccessible in a normal game without cheating or editing.