What are the 3 common muzzleloader actions?

The three common muzzleloader actions are flintlock, percussion cap, and inline. Flintlock actions use a flint striking mechanism to ignite the powder, while percussion cap actions utilize a small cap that detonates to ignite the powder charge. Inline muzzleloaders feature a more modern design, allowing for easier loading and improved ignition reliability, often using a 209 primer. Each action type has its distinct historical significance and operational characteristics.