I disagree. its perfectly feasible that incompetence on behalf of someone at the NM armourers mixed up live and dummies, and its entirely within the realm that old revolvers with slack mechanisms can go off accidentally if waved about, dropped or knocked, especially if the trigger is too sensitive.
A Colt's Single-Action Army or Frontier revolver was the model being used in Rust. No double-action revolver designed after 1900 will accidentally discharge, but a Colt's M1911 single-action semi-auto (or its clone) could, if its safety lever were already in the "off" position. Indeed, many single-action-with-safety semi-autos could, particularly a Russian Tokarev (which has no safety), as long as the gun's hammer were already cocked.
Consider:
1. any revolver that has the firing pin as part of the hammer can be subject to possible discharge
2. its also possible where the hammer has a little play in it in the cocked position, where you could actually push on hammer and it falls causing a discharge - all it needs is the hammer to disconnect from the trigger's shear engagement surface
3. in single action mode with hammer cocked, the perfect angle of impact could actually force the trigger back to actually fire the gun even with a safety transfer bar.
In 1992, there was a significant difference between revolvers and semi-autos when it comes to Accidental Discharges (AD). Revolvers ADs at
0.75 per 1000 verses semi-autos ADs at
14 per 1000.
This came to light in a NYPD discussion document about handguns for cops.
https://www.ojp.gov/pdffiles1/Digiti...45560NCJRS.pdf