, not an official demo, patch, or installer from the developer (PlayWay / Game Hunters).
Search engine data shows a high volume of queries for "Gunsmith Simulator Flint and Powder-RUNE download" or "RUNE repack" . While this publication does not endorse or encourage piracy, it is worth explaining the phenomenon. Gunsmith Simulator Flint and Powder-RUNE
Modern gunsmiths use hex keys and torque wrenches. In , your toolbox includes: , not an official demo, patch, or installer