Short answers. Visible caveats.

Weird Gun Game is a Roblox first-person shooter by Redscape Interactive Projects. Its defining mechanic is building custom weapons by combining parts from different guns, then taking those builds into multiplayer arena matches.

Open the BUILD-UR-GUN interface. The official game description says to click any part and scroll the mouse wheel to swap barrels, stocks, scopes, and more. Save a baseline before making wider changes.

Secondary reference material identifies six common primary slots: barrel, core, magazine, sight, grip, and stock. Current options can change when the game updates.

Parts can affect several full-weapon stats, including damage, recoil, fire rate, reload, spread, range, and mobility. Judge the completed build rather than treating one part's headline benefit as the whole answer.

Yes. Fusing parts from different weapons is the core idea described on the official Roblox page. The result can be practical, strange, or both, but every swap should be checked against the full stat card.

Start with control and consistency. Save a usable baseline, read recoil and spread alongside damage and reload, then change one component after each match so you can tell what helped.

Build a weapon, test it in matches, earn experience and rewards, unlock more options, and iterate. The official page confirms rewards and unlocks through play; exact costs, schedules, and item availability should be checked in the current game version.

There is no update-proof answer. The right build depends on current values, match mode, range, and what you control comfortably. Use a saved baseline and test one change at a time instead of copying a fixed meta list.