Both parts perform a similar function by hitting the primer and causing it to ignite the powder charge in the cartridge. However, they operate differently. A firing pin is driven forward by a blow from a hammer (or similar part in the firearm) which is, in turn, powered by a spring. A striker is driven forward by direct spring force, not by a blow from a hammer. In effect, it plays the part of both hammer and firing pin.
DAO = Double Action Only. Pulling the trigger cocks the hammer (striker) until the trigger breaks and the hammer (or striker) hits the firing pin. A striker is like an internal hammer.
Lorcin type pistols are striker fired which means they use no hammer for applying energy to the firing pin. Thus, you are applying force to the firing pin spring and the recoil spring when cocking the gun from a fired position.
A striker-bound condition is when the firing pin stays in contact with the primer to make opening difficult.
Firing Pin Block
In older guns....and most guns that people think of when they think of a handgun or rifle, there is a "hammer" and a "firing pin". When the trigger is pulled, the hammer is released and it strikes the firing pin which in turn strikes the primer on the cartridge, firing the round in the chamber. With a striker fired gun, there is no hammer. The striker, which is basically a spring loaded firing pin, is released, doing the job of the firing pin and hitting the primer on the round in the chamber. These guns have become very common, and you will find examples of a striker fired system in all Glocks, Springfield XD's, S&W M&P's, Taurus 24/7, etc.
When you charge a firearm, it cocks the hammer (or the striker, depending on the firearm) and readies it for firing.
the firing order is the same on both engines but the timing is different
When the striker or firing pin connects with the rim (on a rimfire) or the primer (on a centerfire), and the cartridge does not fire.
You activate the trigger, the hammer or striker hits the firing pin, the firing pin strikes the primer in the cartridge, which ignites the powder charge in the case.
WWII Japan made one or two military type (style) revolvers, and the rest were semi-automatic Nambu pistols during the war, mostly in 8mm caliber. Single shot pistols are either antique muzzle loaders or special cartridge firing "target" pistols. Hardly no military during WWII had need of single shot pistols.
For most pistols, it can damage the firing pin. This is not true for all pistols. Recommend buying a "cap" cartridge that is a dummy round that can be fed and dry-fired in an automatic pistol without causing damage.
Recoil operated uses recoil from firing to cycle the action. Gas operated uses gas from firing to cycle the action.