diff --git a/src/lib/store/ship/weaponry/rules.ts b/src/lib/store/ship/weaponry/rules.ts
index 42b6fd1..3403c69 100644
--- a/src/lib/store/ship/weaponry/rules.ts
+++ b/src/lib/store/ship/weaponry/rules.ts
@@ -7,120 +7,182 @@ export type Arc = (typeof arcs)[number];
 export type WeaponType = "beam";
 
 type Beam = {
-  type: "beam";
-  weaponClass: 1 | 2 | 3 | 4;
-  arcs: Arc[];
+    type: "beam";
+    weaponClass: 1 | 2 | 3 | 4;
+    arcs: Arc[];
 };
 
 type Submunition = {
-  type: "submunition";
-  arc: Arc;
+    type: "submunition";
+    arc: Arc;
 };
 
 type PDS = {
-  type: "pds";
+    type: "pds";
 };
 
 type Scattergun = { type: "scattergun" };
 
 type Needle = { type: "needle"; arc: Arc };
 
-export type Weapon = Beam | Submunition | PDS | Scattergun | Needle;
+type Graser = {
+    type: "graser";
+    weaponClass: 1 | 2 | 3;
+    arcs: Arc[];
+};
+
+export type Weapon = Beam | Submunition | PDS | Scattergun | Needle | Graser;
 
 export const weaponTypes = [
-  {
-    type: "beam",
-    name: "beam",
-    reqs: beamReqs,
-    initial: {
-      type: "beam",
-      weaponClass: 1,
-      arcs,
-    } as any as Beam,
-  },
-  {
-    type: "submunition",
-    name: "submunition pack",
-    reqs: { mass: 1, cost: 3 },
-    initial: { type: "submunition", arc: "F" } as Submunition,
-  },
-  {
-    name: "point defence system",
-    type: "pds",
-    reqs: { mass: 1, cost: 3 },
-    initial: {
-      type: "pds",
+    {
+        type: "graser",
+        name: "graser",
+        reqs: graserReqs,
+        initial: {
+            type: "graser",
+            weaponClass: 1,
+            arcs: ["F"],
+        } as any as Graser,
+        options: {
+            1: {
+                nbrArcs: [1, 3, 6],
+                broadside: true,
+            },
+            2: {
+                nbrArcs: [1, 2, 3, 4, 5, 6],
+                broadside: true,
+            },
+            3: {
+                nbrArcs: [1, 2, 3, 4, 5, 6],
+                broadside: true,
+            },
+        },
+    },
+    {
+        type: "beam",
+        name: "beam",
+        reqs: beamReqs,
+        initial: {
+            type: "beam",
+            weaponClass: 1,
+            arcs,
+        } as any as Beam,
+    },
+    {
+        type: "submunition",
+        name: "submunition pack",
+        reqs: { mass: 1, cost: 3 },
+        initial: { type: "submunition", arc: "F" } as Submunition,
+    },
+    {
+        name: "point defence system",
+        type: "pds",
+        reqs: { mass: 1, cost: 3 },
+        initial: {
+            type: "pds",
+        },
+    },
+    {
+        name: "scattergun",
+        type: "scattergun",
+        reqs: { mass: 1, cost: 4 },
+        initial: { type: "scattergun" },
+    },
+    {
+        name: "needle beam",
+        type: "needle",
+        reqs: { mass: 2, cost: 6 },
+        initial: { arc: "F", type: "needle" },
     },
-  },
-  {
-    name: "scattergun",
-    type: "scattergun",
-    reqs: { mass: 1, cost: 4 },
-    initial: { type: "scattergun" },
-  },
-  {
-    name: "needle beam",
-    type: "needle",
-    reqs: { mass: 2, cost: 6 },
-    initial: { arc: "F", type: "needle" },
-  },
 ];
 
 export function weaponReqs(weapon): Reqs {
-  const { reqs } = weaponTypes.find((wt) => wt.type === weapon.type) || {};
+    const { reqs } = weaponTypes.find((wt) => wt.type === weapon.type) || {};
 
-  if (!reqs)
-    return {
-      cost: 0,
-      mass: 0,
-    };
+    if (!reqs)
+        return {
+            cost: 0,
+            mass: 0,
+        };
 
-  if (typeof reqs === "function") return reqs(weapon);
+    if (typeof reqs === "function") return reqs(weapon);
 
-  return reqs;
+    return reqs;
 }
 
 const isBroadside = (arcs: Arc[]) => {
-  if (arcs.length !== 4) return false;
+    if (arcs.length !== 4) return false;
 
-  // that'd be A or F
-  return !arcs.some((a) => a.length === 1);
+    // that'd be A or F
+    return !arcs.some((a) => a.length === 1);
 };
 
 function beamReqs({ weaponClass, arcs }: Beam) {
-  console.log(weaponClass, arcs);
-  let mass;
+    let mass;
 
-  if (weaponClass === 1) {
-    mass = 1;
-  }
-
-  if (weaponClass === 2) {
-    mass = 2 + (arcs.length > 3 ? 1 : 0);
-  }
-
-  if (weaponClass == 3) {
-    mass = 4;
-
-    if (isBroadside(arcs)) {
-      mass += 2;
-    } else {
-      mass += arcs.length - 1;
+    if (weaponClass === 1) {
+        mass = 1;
     }
-  }
 
-  if (weaponClass == 4) {
-    mass = 8;
-
-    if (isBroadside(arcs)) {
-      mass += 4;
-    } else {
-      mass += 2 * (arcs.length - 1);
+    if (weaponClass === 2) {
+        mass = 2 + (arcs.length > 3 ? 1 : 0);
     }
-  }
 
-  return {
-    mass,
-    cost: 3 * mass,
-  };
+    if (weaponClass == 3) {
+        mass = 4;
+
+        if (isBroadside(arcs)) {
+            mass += 2;
+        } else {
+            mass += arcs.length - 1;
+        }
+    }
+
+    if (weaponClass == 4) {
+        mass = 8;
+
+        if (isBroadside(arcs)) {
+            mass += 4;
+        } else {
+            mass += 2 * (arcs.length - 1);
+        }
+    }
+
+    return {
+        mass,
+        cost: 3 * mass,
+    };
+}
+
+function graserReqs({ weaponClass, arcs }: Beam) {
+    let mass: number;
+
+    if (weaponClass === 1) {
+        if (arcs.length === 1) {
+            mass = 2;
+        } else if (arcs.length === 3) {
+            mass = 3;
+        } else {
+            mass = 4;
+        }
+    } else if (weaponClass === 2) {
+        mass = 9;
+        if (isBroadside(arcs)) {
+            mass += 6;
+        } else {
+            mass += 3 * (arcs.length - 1);
+        }
+    } else if (weaponClass === 3) {
+        mass = 24;
+        if (isBroadside(arcs)) {
+            mass += 12;
+        } else {
+            mass += 6 * (arcs.length - 1);
+        }
+    }
+
+    return {
+        mass,
+        cost: 4 * mass,
+    };
 }