The Set of Gauntlets 'Paurnen' (+4,+4) [3,+14]
Provides resistance to acid. Cannot be harmed by acid, electricity, fire, cold. Feather Falling.
When aimed, it creates an acid bolt with damage 5d8. Takes 6 to 10 turns to recharge.
Min Level 1, Max Level 60, Generation chance 33, 2.5 lbs

(Angband 3.1.2v2)