A convicted film set armourer has been denied immunity to testify at Alec Baldwin’s involuntary manslaughter trial over the fatal shooting of a cinematographer on the set of Rust, a judge has ruled.

Hannah Gutierrez-Reed was jailed in April for her role in the shooting of cinematographer Halyna Hutchins, who died during a rehearsal on the New Mexico set of the western in 2021.

Baldwin pointed a prop gun at Hutchins, 42, when the revolver went off, killing her and injuring…