Alessandro Pietta, the maker of the Colt .45 replica involved in the tragic shooting on the set of Rust, testified in Alec Baldwin's involuntary manslaughter trial, stating that the gun could only fire if the trigger was pulled. This contradicts Baldwin's claim that the gun went off on its own while he was holding it. Despite various sets of testing over the years, forensic investigators agree with Pietta's assessment. The trial, which began on July 9th and is set to run until July 19th, has focused on law enforcement's role in the aftermath of the shooting. Baldwin's defense team raised questions about evidence suppression and a potential witness who claimed to have information on the origin of the live rounds that killed the cinematographer, Halyna Hutchins. With several key witnesses yet to testify, including Rust armorer Hannah Gutierrez-Reed, the trial continues to unfold with uncertainty surrounding Baldwin's testimony and the ultimate verdict.