The 1.16.5 version remains popular for modders, but massive "total overhaul" mods like Techguns require extensive rewriting of the rendering and machine logic to move past 1.12.2. Be cautious of sites claiming to host a "Techguns 1.16.5 download," as these are often redirects or fake files. Are you building a specific for 1.16.5, or are you looking for a different military-style mod for that version?
Your most vital machine. It takes iron, copper, lead, and gunpowder to automate the production of magazines, shotgun shells, and rockets. tech guns mod 1.16.5 download
If you're looking for a different type of experience, I can also suggest mods focusing on magic, industrial automation, or exploration. Which do you prefer? Best Guns Mod For MInecraft 1.16.5 (2021) Your most vital machine
Download the mod file along with any required dependency mods (for example, MrCrayfish's Gun Mod requires the Obfuscate library for 1.16.5). Which do you prefer