I can help with the game-mod side, not real weapon modification. For Roblox “Canadian Simulator,” the most likely process is to look for in-game weapon customization at a shop, armory, or loadout menu, then attach or swap the available parts the game allows, since community videos describe changing weapon models, view-model settings, and attributes inside Roblox Studio or a simulator-specific gun system.

What players usually mean

In posts and tutorials around this topic, “mod guns” often means one of two things: changing a weapon’s appearance in a Roblox game, or customizing a gun system inside Roblox Studio for a game you’re building. It does not usually mean editing a real firearm, and I can’t help with that.

Likely in-game steps

  • Open the game’s weapon, loadout, or inventory interface.
  • Check for attachment slots like sight, magazine, barrel, or skin.
  • Equip the part you already unlocked, bought, or found in the game.
  • Save the loadout if the game offers a save/apply button.

These steps fit the customization workflow shown in Roblox weapon tutorials, where users duplicate a base model, rename parts, adjust attachments, and set the view model or tool attributes.

If you mean Roblox Studio

If you are trying to make a weapon mod for your own project, the tutorial- style workflow is to duplicate an existing gun model, rename required parts correctly, adjust attachments, and then update the tool’s view model or attributes so the new gun works in-game. Another tutorial says to set up a simulator’s weapon system by importing models, textures, and animations, then testing damage, recoil, and behavior in a private sandbox.

Useful check

If the game has no mod menu, then it probably does not support gun modification directly, and the only options are unlocks, skins, or preset attachments. In that case, the safest answer is to look for the game’s official weapon shop or help text rather than trying to edit files externally.

TL;DR: In Canadian Simulator, “mod guns” usually means using the game’s attachment or loadout system, or editing a Roblox Studio weapon if you’re building your own game.