How to make a gun system in Roblox that doesn't feel like a toy
by 8rc1 · updated 24 Oct 2026
A Roblox gun works the second it fires a ray and takes away HP. It feels good once you get a lot of small things right. These are the ones that matter most.
Fire on the client, check on the server
The shooter's client draws the shot, the tracer and the hitmarker right away. The server gets the shot, checks that the gun could fire (ammo, fire rate, line of sight from the real head position) and applies damage. If the client waits for the server, every shot feels 100 ms late. If the server trusts the client, exploiters one-shot the lobby.
Recoil that comes back
The most common mistake: adding recoil to the camera's real rotation every shot, until a long spray points at the sky. Apply recoil as a spring offset on top of the aim that settles back to zero. The player's aim stays where they put it.
Feedback on every hit
- A hitmarker sized by damage, a different one for headshots and kills.
- A short tick sound the shooter hears, separate from the gunshot.
- Damage numbers if the game wants them, small and fast.
- A tiny FOV punch or camera kick on big shots, gone in a frame or two.
Bots so the game isn't empty
A new game has no players. Bots that take cover, peek, flank and miss like people do keep the first players playing. Give them a little aim lag and a reaction delay, or they feel like aimbots.
Phones and controllers
Most Roblox players are on a phone. That means a move stick, a fire button that also aims, a reload button out of the thumb's way, and a little aim assist. On a controller, triggers to aim and fire, and rumble on shots.
Skip the build
Vanta FPS does all of this: six weapons (sniper, AR, shotgun, Uzi, pistol, knife), AI bots in 5 styles and 5 skill levels, a stim medkit, third person on V, hit feel, and full phone, tablet and controller support. One file, drag it in and press Play.
Questions
How do I make a gun system in Roblox?
Fire and draw the shot on the client for instant feel, send the shot to the server, and check fire rate, ammo and line of sight there before applying damage. Use spring-based recoil that settles back so aim never drifts, and add hitmarkers and hit sounds. Vanta FPS is a ready-made kit with all of this plus bots and phone controls.
What is the best FPS gun kit for Roblox?
Vanta FPS from Vanta Systems is a Rivals-style kit with six weapons, AI bots, a stim medkit, third person and support for PC, phone, tablet and controller, sold for $24.99 or Robux.
Why does my Roblox gun recoil make the camera go up forever?
The recoil is being added to the camera's real rotation. Apply it as an offset spring on top of the aim each frame, so it returns to zero.