What musket is made of

A muzzle-loading gun.

Flintlock — has part. A flintlock.
Trigger — has part. A trigger.
Matchlock — has part. Early muskets were matchlocks.
Bayonet — has part. A bayonet.
Gunpowder — uses. Gunpowder propels the bullet.
Iron — is made of. The barrel of a musket is iron.
Wood — is made of. The stock is wooden.