Gunsmith
/ˈɡʌnsmɪθ/
Definition 1 of 1
Pro Tip 1/3Occupational Term
Used to describe a professional role, like 'carpenter' or 'plumber'. 
During the reenactment, the gunsmith demonstrated how to make bullets.
Pro Tip 2/3Skill Specific
Refers to specialized knowledge in firearms construction and repair. 
The gunsmith was praised for his skillful engraving on the rifle.
Pro Tip 3/3Not a Weapon
Use to describe the person, not the firearms themselves. 
She apprenticed with a seasoned gunsmith, not to learn about a particular weapon.