Matchlock Firearms
A matchlock firearm is one of the earliest forms of firearms with a mechanical firing mechanism, marking a significant advancement in the history of firearms.

Wheel Lock Firearms
A wheel lock firearm is a significant evolution in the history of firearms, representing a step forward from the matchlock in terms of reliability, ease of use, and safety.

Snaphaunce Firearms
A snaphaunce is a type of firearm ignition mechanism that represents an evolutionary step between the earlier wheel lock and the later flintlock systems.

Flintlock Firearms
A flintlock firearm is a type of firearm that uses a flint striking against steel to ignite gunpowder, marking a significant advancement in firearms technology.

Percussion Cap Firearms
A percussion cap firearm represents a significant advancement in firearm technology, following the flintlock.

Paper Cartridge Firearms
These were essentially paper tubes filled with gunpowder, wadding, and shot. They were sealed at one end, and the shooter would tear open the other end to pour the powder into the barrel, followed by the shot. This method was an improvement because it standardized the load, making shooting more consistent.

Brass Hull Firearms
By the late 19th century, brass shotgun shells began to appear. These were more durable than paper, reusable, and offered better sealing against moisture. The Winchester Repeating Arms Company introduced brass shotgun shells in 1877. Brass shells were loaded with black powder, but as smokeless powder became prevalent, brass shells adapted to use these new propellants.

Plastic Hull - Modern Shotguns
The most significant advancement came with the introduction of plastic shotgun shells in the 1960s. Plastic provided several advantages including durability, sealing, recoil management and manufacturing.