diff --git a/package.json b/package.json
index 38cc2b880..f1f9a8751 100644
--- a/package.json
+++ b/package.json
@@ -63,6 +63,7 @@
     "satori": "^0.10.8",
     "sharp": "^0.33.1",
     "three": "^0.159.0",
+    "three-custom-shader-material": "^5.4.0",
     "three-stdlib": "^2.28.11",
     "vite-node": "^0.34.5",
     "vitepress": "^1.0.0-rc.20",
diff --git a/src/app/tools/tankopedia/[id]/components/Model/components/TankArmor.tsx b/src/app/tools/tankopedia/[id]/components/Model/components/TankArmor.tsx
index 7ea7b21b9..f1d5cae89 100644
--- a/src/app/tools/tankopedia/[id]/components/Model/components/TankArmor.tsx
+++ b/src/app/tools/tankopedia/[id]/components/Model/components/TankArmor.tsx
@@ -22,8 +22,12 @@ export function TankArmor() {
     if (!state.areTanksAssigned) return;
     return state.protagonist;
   });
+  const antagonist = useTankopedia((state) => {
+    if (!state.areTanksAssigned) return;
+    return state.antagonist;
+  });
 
-  if (!protagonist) return null;
+  if (!protagonist || !antagonist) return null;
 
   const gltf = useLoader(
     GLTFLoader,
@@ -80,15 +84,25 @@ export function TankArmor() {
       <group rotation={[-Math.PI / 2, 0, model.hullYaw]}>
         {nodes.map((node) => {
           const isHull = node.name.startsWith('hull_');
+          const armorId = parseInt(node.name.match(/.+_armor_(\d+)/)![1]);
           const isVisible = isHull;
+          const thickness = tankModelDefinition.armor.thickness[armorId] ?? 0;
 
           if (!isVisible) return null;
           return (
-            <ArmorMesh key={node.uuid} geometry={(node as Mesh).geometry} />
+            <ArmorMesh
+              key={node.uuid}
+              geometry={(node as Mesh).geometry}
+              thickness={thickness}
+              penetration={100}
+              ricochet={antagonist.shell.ricochet * (Math.PI / 180)}
+              caliber={antagonist.shell.caliber}
+              normalization={antagonist.shell.normalization}
+            />
           );
         })}
 
-        <group position={turretPosition} rotation={turretRotation}>
+        {/* <group position={turretPosition} rotation={turretRotation}>
           {nodes.map((node) => {
             const isCurrentTurret = node.name.startsWith(
               `turret_${turretModelDefinition.model
@@ -133,7 +147,7 @@ export function TankArmor() {
               );
             })}
           </group>
-        </group>
+        </group> */}
       </group>
     </HeadsUpDisplay>
   );
diff --git a/src/app/tools/tankopedia/[id]/components/VersusBar.tsx b/src/app/tools/tankopedia/[id]/components/VersusBar.tsx
index 8b6067b2c..398a9da67 100644
--- a/src/app/tools/tankopedia/[id]/components/VersusBar.tsx
+++ b/src/app/tools/tankopedia/[id]/components/VersusBar.tsx
@@ -132,6 +132,8 @@ export function VersusBar() {
                                         tank.turrets.at(-1)!;
                                       draft.antagonist.gun =
                                         draft.antagonist.turret.guns.at(-1)!;
+                                      draft.antagonist.shell =
+                                        draft.antagonist.gun.shells[0];
                                     });
                                     setVersusTankSearchResults([]);
                                     versusTankSearchInput.current!.value = '';
@@ -176,6 +178,8 @@ export function VersusBar() {
                                       draft.antagonist.turret = turret;
                                       draft.antagonist.gun =
                                         turret.guns.at(-1)!;
+                                      draft.antagonist.shell =
+                                        draft.antagonist.gun.shells[0];
                                     });
                                   }}
                                   selected={antagonist.turret.id === turret.id}
@@ -210,6 +214,7 @@ export function VersusBar() {
                                     mutateTankopedia((draft) => {
                                       if (!draft.areTanksAssigned) return;
                                       draft.antagonist.gun = gun;
+                                      draft.antagonist.shell = gun.shells[0];
                                     });
                                   }}
                                   selected={antagonist.gun.id === gun.id}
diff --git a/src/app/tools/tankopedia/[id]/page.tsx b/src/app/tools/tankopedia/[id]/page.tsx
index d7ba0668d..c9b3b309d 100644
--- a/src/app/tools/tankopedia/[id]/page.tsx
+++ b/src/app/tools/tankopedia/[id]/page.tsx
@@ -33,7 +33,10 @@ export default function Page({ params }: { params: { id: string } }) {
       draft.protagonist.tank = awaitedTankDefinitions[id];
       draft.protagonist.turret = draft.protagonist.tank.turrets.at(-1)!;
       draft.protagonist.gun = draft.protagonist.turret.guns.at(-1)!;
-      draft.antagonist = draft.protagonist;
+      draft.antagonist = {
+        ...draft.protagonist,
+        shell: draft.protagonist.gun.shells[0],
+      };
     });
 
     return () => {
diff --git a/src/components/ArmorMesh.tsx b/src/components/ArmorMesh.tsx
index d081d5dbc..e6190284a 100644
--- a/src/components/ArmorMesh.tsx
+++ b/src/components/ArmorMesh.tsx
@@ -1,8 +1,39 @@
+// // Vertex shader
+// varying vec3 vNormal; // declare a varying variable to pass the normal vector
+// void main() {
+//   vNormal = normal; // assign the normal vector to the varying variable
+//   gl_Position = projectionMatrix * modelViewMatrix * vec4(position, 1.0); // transform the vertex position
+// }
+
+// // Fragment shader
+// varying vec3 vNormal; // declare the same varying variable to receive the normal vector
+// void main() {
+//   vec3 cameraDir = -viewPosition; // get the camera direction vector by negating the view position
+//   float angle = acos(dot(vNormal, cameraDir)); // calculate the angle of the fragment using the dot product and the acos function
+//   vec3 color = mix(vec3(1.0, 0.0, 0.0), vec3(0.0, 0.0, 1.0), angle / PI); // create a gradient color from red to blue based on the angle
+//   gl_FragColor = vec4(color, 1.0); // set the fragment color
+// }
+
 import { MeshProps } from '@react-three/fiber';
+import { MeshBasicMaterial } from 'three';
+import CustomShaderMaterial from 'three-custom-shader-material';
 
-interface ArmorMeshProps extends MeshProps {}
+interface ArmorMeshProps extends MeshProps {
+  thickness: number;
+  penetration: number;
+  ricochet: number;
+  caliber: number;
+  normalization: number;
+}
 
-export function ArmorMesh(props: ArmorMeshProps) {
+export function ArmorMesh({
+  thickness,
+  penetration,
+  caliber,
+  ricochet,
+  normalization,
+  ...props
+}: ArmorMeshProps) {
   return (
     <>
       <mesh {...props}>
@@ -10,13 +41,89 @@ export function ArmorMesh(props: ArmorMeshProps) {
       </mesh>
 
       <mesh {...props} renderOrder={1}>
-        <meshBasicMaterial
+        <CustomShaderMaterial
+          baseMaterial={MeshBasicMaterial}
           transparent
-          // opacity={Math.random() / 2}
-          opacity={0.25}
+          silent
+          depthWrite={false}
+          uniforms={{
+            thickness: { value: thickness },
+            penetration: { value: penetration },
+            ricochet: { value: ricochet },
+            caliber: { value: caliber },
+            normalization: { value: normalization },
+          }}
+          vertexShader={`
+            varying vec3 vNormal;
+            varying vec3 vViewPosition;
+
+            void main() {
+              vec4 vViewPosition4 = modelViewMatrix * vec4(position, 1.0);
+              vViewPosition = vViewPosition4.xyz;
+              vNormal = normalMatrix * normal;
+            }
+          `}
+          fragmentShader={`
+            varying vec3 vViewPosition;
+            uniform float thickness;
+            uniform float penetration;
+            uniform float ricochet;
+            uniform float caliber;
+            uniform float normalization;
+
+            void main() {
+              vec3 normalizedNormal = normalize(vNormal);
+              vec3 normalizedViewPosition = normalize(vViewPosition);
+              float angle = acos(dot(normalizedNormal, -normalizedViewPosition));
+              float sinAngle = sin(angle);
+
+              float penetrationChance = 0.0;
+              float effectiveArmor = thickness * sinAngle;
+              bool twoCaliberRule = caliber > 2.0 * thickness;
+              bool threeCaliberRule = caliber > 3.0 * thickness;
+              float finalNormalization = normalization;
+
+              if (twoCaliberRule) {
+                finalNormalization = (normalization * 1.4 * caliber) / (2.0 * thickness);
+              }
+
+              if (
+                angle >= ricochet
+                && !threeCaliberRule
+              ) {
+                penetrationChance = 1.0;
+              }
+
+              csm_FragColor *= vec4(1.0, 0.0, 0.0, penetrationChance * 0.5);
+            }
+          `}
+        />
+
+        {/* <meshBasicMaterial
+          transparent
+          opacity={0.5}
           color="red"
           depthWrite={false}
-        />
+        /> */}
+        {/* <shaderMaterial
+          transparent
+          depthWrite={false}
+          args={[
+            {
+              vertexShader: `
+                void main() {
+                  gl_Position = projectionMatrix * modelViewMatrix * vec4(position, 1.0);
+                }
+              `,
+
+              fragmentShader: `
+                void main() {
+                  gl_FragColor = vec4(1.0, 0.0, 0.0, 0.5);
+                }
+              `,
+            },
+          ]}
+        /> */}
       </mesh>
     </>
   );
diff --git a/src/stores/tankopedia.ts b/src/stores/tankopedia.ts
index acf1a73b1..20c85898f 100644
--- a/src/stores/tankopedia.ts
+++ b/src/stores/tankopedia.ts
@@ -3,6 +3,7 @@ import { create } from 'zustand';
 import { TankType, TreeTypeString } from '../components/Tanks';
 import {
   GunDefinition,
+  ShellDefinition,
   TankDefinition,
   Tier,
   TurretDefinition,
@@ -45,6 +46,7 @@ type Tankopedia = {
         tank: TankDefinition;
         turret: TurretDefinition;
         gun: GunDefinition;
+        shell: ShellDefinition;
       };
     }
   | { areTanksAssigned: false }
diff --git a/yarn.lock b/yarn.lock
index 9a12dcdec..4f6ad2ea5 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -3967,6 +3967,23 @@ glsl-noise@^0.0.0:
   resolved "https://registry.yarnpkg.com/glsl-noise/-/glsl-noise-0.0.0.tgz#367745f3a33382c0eeec4cb54b7e99cfc1d7670b"
   integrity sha512-b/ZCF6amfAUb7dJM/MxRs7AetQEahYzJ8PtgfrmEdtw6uyGOr+ZSGtgjFm6mfsBkxJ4d2W7kg+Nlqzqvn3Bc0w==
 
+glsl-token-functions@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/glsl-token-functions/-/glsl-token-functions-1.0.1.tgz#2f1614746b96e14f059a6d62af79b65457f0c9a0"
+  integrity sha512-EigGhp1g+aUVeUNY7H1o5tL/bnwIB3/FcRREPr2E7Du+/UDXN24hDkaZ3e4aWHDjHr9lJ6YHXMISkwhUYg9UOg==
+
+glsl-token-string@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/glsl-token-string/-/glsl-token-string-1.0.1.tgz#59441d2f857de7c3449c945666021ece358e48ec"
+  integrity sha512-1mtQ47Uxd47wrovl+T6RshKGkRRCYWhnELmkEcUAPALWGTFe2XZpH3r45XAwL2B6v+l0KNsCnoaZCSnhzKEksg==
+
+glsl-tokenizer@^2.1.5:
+  version "2.1.5"
+  resolved "https://registry.yarnpkg.com/glsl-tokenizer/-/glsl-tokenizer-2.1.5.tgz#1c2e78c16589933c274ba278d0a63b370c5fee1a"
+  integrity sha512-XSZEJ/i4dmz3Pmbnpsy3cKh7cotvFlBiZnDOwnj/05EwNp2XrhQ4XKJxT7/pDt4kp4YcpRSKz8eTV7S+mwV6MA==
+  dependencies:
+    through2 "^0.6.3"
+
 gopd@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/gopd/-/gopd-1.0.1.tgz#29ff76de69dac7489b7c0918a5788e56477c332c"
@@ -4187,7 +4204,7 @@ inflight@^1.0.4:
     once "^1.3.0"
     wrappy "1"
 
-inherits@2, inherits@2.0.4, inherits@^2.0.3, inherits@~2.0.3:
+inherits@2, inherits@2.0.4, inherits@^2.0.3, inherits@~2.0.1, inherits@~2.0.3:
   version "2.0.4"
   resolved "https://registry.yarnpkg.com/inherits/-/inherits-2.0.4.tgz#0fa2c64f932917c3433a0ded55363aae37416b7c"
   integrity sha512-k/vGaX4/Yla3WzyMCvTQOXYeIHvqOKtnqBduzTHpzpQZzAskKMhZ2K+EnBiSM9zGSoIFeMpXKxa4dYeZIQqewQ==
@@ -4263,6 +4280,11 @@ is-stream@^1.1.0:
   resolved "https://registry.yarnpkg.com/is-stream/-/is-stream-1.1.0.tgz#12d4a3dd4e68e0b79ceb8dbc84173ae80d91ca44"
   integrity sha512-uQPm8kcs47jx38atAcWTVxyltQYoPT68y9aWYdV6yWXSyW8mzSat0TL6CiWdZeCdF3KrAvpVtnHbTv4RN+rqdQ==
 
+isarray@0.0.1:
+  version "0.0.1"
+  resolved "https://registry.yarnpkg.com/isarray/-/isarray-0.0.1.tgz#8a18acfca9a8f4177e09abfc6038939b05d1eedf"
+  integrity sha512-D2S+3GLxWH+uhrNEcoh/fnmYeP8E8/zHl644d/jdA0g2uyXvy3sb0qxotE+ne0LtccHknQzWwZEzhak7oJ0COQ==
+
 isarray@~1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/isarray/-/isarray-1.0.0.tgz#bb935d48582cba168c06834957a54a3e07124f11"
@@ -4870,6 +4892,11 @@ object-assign@^4, object-assign@^4.0.1, object-assign@^4.1.1:
   resolved "https://registry.yarnpkg.com/object-assign/-/object-assign-4.1.1.tgz#2109adc7965887cfc05cbbd442cac8bfbb360863"
   integrity sha512-rJgTQnkUnH1sFw8yT6VSU3zD3sWmu6sZhIseY8VX+GRu3P6F7Fu+JNDoXfklElbLJSnc3FUQHVe4cU5hj+BcUg==
 
+object-hash@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/object-hash/-/object-hash-3.0.0.tgz#73f97f753e7baffc0e2cc9d6e079079744ac82e9"
+  integrity sha512-RSn9F68PjH9HqtltsSnqYC1XXoWe9Bju5+213R98cNGttag9q9yAOTzdbsqvIa7aNm5WffBZFpWYr2aWrklWAw==
+
 object-inspect@^1.9.0:
   version "1.13.1"
   resolved "https://registry.yarnpkg.com/object-inspect/-/object-inspect-1.13.1.tgz#b96c6109324ccfef6b12216a956ca4dc2ff94bc2"
@@ -5325,6 +5352,16 @@ readable-stream@3, readable-stream@^3.0.0, readable-stream@^3.6.0:
     string_decoder "^1.1.1"
     util-deprecate "^1.0.1"
 
+"readable-stream@>=1.0.33-1 <1.1.0-0":
+  version "1.0.34"
+  resolved "https://registry.yarnpkg.com/readable-stream/-/readable-stream-1.0.34.tgz#125820e34bc842d2f2aaafafe4c2916ee32c157c"
+  integrity sha512-ok1qVCJuRkNmvebYikljxJA/UEsKwLl2nI1OmaqAu4/UE+h0wKCHok4XkL/gvi39OacXvw59RJUOFUkDib2rHg==
+  dependencies:
+    core-util-is "~1.0.0"
+    inherits "~2.0.1"
+    isarray "0.0.1"
+    string_decoder "~0.10.x"
+
 readable-stream@^2.3.0, readable-stream@^2.3.5:
   version "2.3.8"
   resolved "https://registry.yarnpkg.com/readable-stream/-/readable-stream-2.3.8.tgz#91125e8042bba1b9887f49345f6277027ce8be9b"
@@ -5730,6 +5767,11 @@ string_decoder@^1.1.1:
   dependencies:
     safe-buffer "~5.2.0"
 
+string_decoder@~0.10.x:
+  version "0.10.31"
+  resolved "https://registry.yarnpkg.com/string_decoder/-/string_decoder-0.10.31.tgz#62e203bc41766c6c28c9fc84301dab1c5310fa94"
+  integrity sha512-ev2QzSzWPYmy9GuqfIVildA4OdcGLeFZQrq5ys6RtiuF+RQQiZWr8TZNyAcuVXyQRYfEO+MsoB/1BuQVhOJuoQ==
+
 string_decoder@~1.1.1:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/string_decoder/-/string_decoder-1.1.1.tgz#9cf1611ba62685d7030ae9e4ba34149c3af03fc8"
@@ -5831,6 +5873,16 @@ tar-stream@^1.5.2:
     to-buffer "^1.1.1"
     xtend "^4.0.0"
 
+three-custom-shader-material@^5.4.0:
+  version "5.4.0"
+  resolved "https://registry.yarnpkg.com/three-custom-shader-material/-/three-custom-shader-material-5.4.0.tgz#ee571c335a028a9b75c703b2ba83199176000847"
+  integrity sha512-Yn1lFlKOk3Vul3npEGAmbbFUZ5S2+yjPgM2XqJEZEYRSUUH2vk+WVYrtTB6Bcq15wa7hLUXAKoctAvbRmBmbYA==
+  dependencies:
+    glsl-token-functions "^1.0.1"
+    glsl-token-string "^1.0.1"
+    glsl-tokenizer "^2.1.5"
+    object-hash "^3.0.0"
+
 three-mesh-bvh@^0.6.7:
   version "0.6.8"
   resolved "https://registry.yarnpkg.com/three-mesh-bvh/-/three-mesh-bvh-0.6.8.tgz#f27d18ca75bdc59316dff0f561af8fb316621a54"
@@ -5865,6 +5917,14 @@ three@^0.159.0:
   resolved "https://registry.yarnpkg.com/three/-/three-0.159.0.tgz#6576b1210805b14f0765bac41fd0e4ec18e43b2e"
   integrity sha512-eCmhlLGbBgucuo4VEA9IO3Qpc7dh8Bd4VKzr7WfW4+8hMcIfoAVi1ev0pJYN9PTTsCslbcKgBwr2wNZ1EvLInA==
 
+through2@^0.6.3:
+  version "0.6.5"
+  resolved "https://registry.yarnpkg.com/through2/-/through2-0.6.5.tgz#41ab9c67b29d57209071410e1d7a7a968cd3ad48"
+  integrity sha512-RkK/CCESdTKQZHdmKICijdKKsCRVHs5KsLZ6pACAmF/1GPUQhonHSXWNERctxEp7RmvjdNbZTL5z9V7nSCXKcg==
+  dependencies:
+    readable-stream ">=1.0.33-1 <1.1.0-0"
+    xtend ">=4.0.0 <4.1.0-0"
+
 through2@^4.0.0:
   version "4.0.2"
   resolved "https://registry.yarnpkg.com/through2/-/through2-4.0.2.tgz#a7ce3ac2a7a8b0b966c80e7c49f0484c3b239764"
@@ -6360,7 +6420,7 @@ ws@^8.14.2:
   resolved "https://registry.yarnpkg.com/ws/-/ws-8.15.1.tgz#271ba33a45ca0cc477940f7f200cd7fba7ee1997"
   integrity sha512-W5OZiCjXEmk0yZ66ZN82beM5Sz7l7coYxpRkzS+p9PP+ToQry8szKh+61eNktr7EA9DOwvFGhfC605jDHbP6QQ==
 
-xtend@^4.0.0:
+"xtend@>=4.0.0 <4.1.0-0", xtend@^4.0.0:
   version "4.0.2"
   resolved "https://registry.yarnpkg.com/xtend/-/xtend-4.0.2.tgz#bb72779f5fa465186b1f438f674fa347fdb5db54"
   integrity sha512-LKYU1iAXJXUgAXn9URjiu+MWhyUXHsvfp7mcuYm9dSUKK0/CjtrUwFAxD82/mCWbtLsGjFIad0wIsod4zrTAEQ==