diff --git a/src/client/render/gl/RenderSettings.ts b/src/client/render/gl/RenderSettings.ts
index 180317948..cca1cd316 100644
--- a/src/client/render/gl/RenderSettings.ts
+++ b/src/client/render/gl/RenderSettings.ts
@@ -257,6 +257,7 @@ export interface RenderSettings {
   };
   fx: {
     shockwaveRingWidth: number;
+    attackRingScreenPx: number; // screen px — attack ring quad half-size (visible outer ring = 0.8×)
     nukeShockwaveDurationMs: number;
     nukeShockwaveRadiusFactor: number;
     samShockwaveDurationMs: number;
diff --git a/src/client/render/gl/debug/Layout.ts b/src/client/render/gl/debug/Layout.ts
index e885f11fa..242b935f9 100644
--- a/src/client/render/gl/debug/Layout.ts
+++ b/src/client/render/gl/debug/Layout.ts
@@ -332,6 +332,15 @@ export function buildTree(s: RenderSettings, d: RenderSettings): DebugNode[] {
 
     folder("FX", [
       slider(s.fx, "shockwaveRingWidth", d.fx, 0.01, 0.2, 0.005),
+      slider(
+        s.fx,
+        "attackRingScreenPx",
+        d.fx,
+        5,
+        60,
+        1,
+        "Attack Ring Size (px)",
+      ),
       slider(
         s.fx,
         "nukeShockwaveDurationMs",
diff --git a/src/client/render/gl/passes/fx-pass/FxAttackRingPass.ts b/src/client/render/gl/passes/fx-pass/FxAttackRingPass.ts
index c522e2880..4c0932bd7 100644
--- a/src/client/render/gl/passes/fx-pass/FxAttackRingPass.ts
+++ b/src/client/render/gl/passes/fx-pass/FxAttackRingPass.ts
@@ -50,6 +50,7 @@ export class FxAttackRingPass {
   private uTilesPerPx: WebGLUniformLocation;
   private uTime: WebGLUniformLocation;
   private uRingWidth: WebGLUniformLocation;
+  private uRingScreenPx: WebGLUniformLocation;
   private vao: WebGLVertexArrayObject;
   private instanceBuf: DynamicInstanceBuffer;
   private ringCount = 0;
@@ -65,6 +66,7 @@ export class FxAttackRingPass {
     this.uTilesPerPx = gl.getUniformLocation(this.program, "uTilesPerPx")!;
     this.uTime = gl.getUniformLocation(this.program, "uTime")!;
     this.uRingWidth = gl.getUniformLocation(this.program, "uRingWidth")!;
+    this.uRingScreenPx = gl.getUniformLocation(this.program, "uRingScreenPx")!;
 
     const glBuf = gl.createBuffer()!;
     this.instanceBuf = new DynamicInstanceBuffer(
@@ -182,6 +184,7 @@ export class FxAttackRingPass {
     gl.uniform1f(this.uTilesPerPx, 1 / zoom);
     gl.uniform1f(this.uTime, performance.now() / 1000);
     gl.uniform1f(this.uRingWidth, this.settings.fx.shockwaveRingWidth);
+    gl.uniform1f(this.uRingScreenPx, this.settings.fx.attackRingScreenPx);
     gl.bindBuffer(gl.ARRAY_BUFFER, this.instanceBuf.buffer);
     gl.bufferSubData(
       gl.ARRAY_BUFFER,
diff --git a/src/client/render/gl/render-settings.json b/src/client/render/gl/render-settings.json
index a9f5ccc87..21a6c90be 100644
--- a/src/client/render/gl/render-settings.json
+++ b/src/client/render/gl/render-settings.json
@@ -216,6 +216,7 @@
   },
   "fx": {
     "shockwaveRingWidth": 0.04,
+    "attackRingScreenPx": 30,
     "nukeShockwaveDurationMs": 1500,
     "nukeShockwaveRadiusFactor": 1.5,
     "samShockwaveDurationMs": 800,
diff --git a/src/client/render/gl/shaders/fx/attack-ring.vert.glsl b/src/client/render/gl/shaders/fx/attack-ring.vert.glsl
index 3c66df397..139b097a2 100644
--- a/src/client/render/gl/shaders/fx/attack-ring.vert.glsl
+++ b/src/client/render/gl/shaders/fx/attack-ring.vert.glsl
@@ -6,18 +6,18 @@ layout(location = 1) in vec3 aInstData; // x, y, alpha
 
 uniform mat3 uCamera;
 uniform float uTilesPerPx;
+// Quad half-size in screen px; visible outer ring = 0.8× (frag OUTER_R),
+// the rest is headroom for SDF AA.
+uniform float uRingScreenPx;
 
 out vec2  vLocalPos;
 flat out float vAlpha;
 
-// Upstream outer ring = 16 screen-px; quad needs headroom for SDF AA.
-const float RING_SCREEN_PX = 20.0;
-
 void main() {
   vec2 center = vec2(aInstData.x + 0.5, aInstData.y + 0.5);
   vAlpha = aInstData.z;
 
-  float worldRadius = RING_SCREEN_PX * uTilesPerPx;
+  float worldRadius = uRingScreenPx * uTilesPerPx;
   vec2 worldPos = center + (aPos - 0.5) * worldRadius * 2.0;
 
   vec3 clip = uCamera * vec3(worldPos, 1.0);