。
Bring it on — arrows, guns, whatever you've got!
Literal
Arrow [either-でも] gun [either-でも] bring-[imperative-こい].
A defiant expression — 'arrows or guns, bring them!' — using the ~でも...~でも pattern ('whether X or Y, it doesn't matter') and the rough imperative 持ってこい (持ってくる's plain command form; こい is the irregular imperative of 来る). Strong masculine/challenging register; the phrase often appears in period drama dialogue to express fearlessness.