diff --git a/package-lock.json b/package-lock.json
index a9e619d9..a9c49d28 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -17,7 +17,7 @@
         "mongoose": "^8.11.0",
         "morgan": "^1.10.0",
         "typescript": ">=4.7.4 <5.6.0",
-        "warframe-public-export-plus": "^0.5.43",
+        "warframe-public-export-plus": "^0.5.44",
         "warframe-riven-info": "^0.1.2",
         "winston": "^3.17.0",
         "winston-daily-rotate-file": "^5.0.0"
@@ -4006,9 +4006,9 @@
       }
     },
     "node_modules/warframe-public-export-plus": {
-      "version": "0.5.43",
-      "resolved": "https://registry.npmjs.org/warframe-public-export-plus/-/warframe-public-export-plus-0.5.43.tgz",
-      "integrity": "sha512-LeF7HmsjOPsJDtgr66x3iMEIAQgcxKNM54VG895FTemgHLLo34UGDyeS1yIfY67WxxbTUgW3MkHQLlCEJXD14w=="
+      "version": "0.5.44",
+      "resolved": "https://registry.npmjs.org/warframe-public-export-plus/-/warframe-public-export-plus-0.5.44.tgz",
+      "integrity": "sha512-0EH3CQBCuuELiLBL1brc/o6Qx8CK723TJF5o68VXc60ha93Juo6LQ+dV+QgzFvVQ5RZTjBLtKB4MP8qw3YHCUQ=="
     },
     "node_modules/warframe-riven-info": {
       "version": "0.1.2",
diff --git a/package.json b/package.json
index eb4ceaa7..16610896 100644
--- a/package.json
+++ b/package.json
@@ -22,7 +22,7 @@
     "mongoose": "^8.11.0",
     "morgan": "^1.10.0",
     "typescript": ">=4.7.4 <5.6.0",
-    "warframe-public-export-plus": "^0.5.43",
+    "warframe-public-export-plus": "^0.5.44",
     "warframe-riven-info": "^0.1.2",
     "winston": "^3.17.0",
     "winston-daily-rotate-file": "^5.0.0"
diff --git a/src/controllers/api/syndicateStandingBonusController.ts b/src/controllers/api/syndicateStandingBonusController.ts
index 6899ee3e..4067e9db 100644
--- a/src/controllers/api/syndicateStandingBonusController.ts
+++ b/src/controllers/api/syndicateStandingBonusController.ts
@@ -1,10 +1,19 @@
 import { RequestHandler } from "express";
 import { getAccountIdForRequest } from "@/src/services/loginService";
-import { addMiscItems, getInventory, getStandingLimit, updateStandingLimit } from "@/src/services/inventoryService";
-import { IMiscItem } from "@/src/types/inventoryTypes/inventoryTypes";
+import {
+    addMiscItems,
+    freeUpSlot,
+    getInventory,
+    getStandingLimit,
+    updateStandingLimit
+} from "@/src/services/inventoryService";
+import { IMiscItem, InventorySlot } from "@/src/types/inventoryTypes/inventoryTypes";
 import { IOid } from "@/src/types/commonTypes";
-import { ExportSyndicates } from "warframe-public-export-plus";
+import { ExportSyndicates, ExportWeapons } from "warframe-public-export-plus";
 import { getMaxStanding } from "@/src/helpers/syndicateStandingHelper";
+import { logger } from "@/src/utils/logger";
+import { IInventoryChanges } from "@/src/types/purchaseTypes";
+import { EquipmentFeatures } from "@/src/types/inventoryTypes/commonInventoryTypes";
 
 export const syndicateStandingBonusController: RequestHandler = async (req, res) => {
     const accountId = await getAccountIdForRequest(req);
@@ -12,6 +21,7 @@ export const syndicateStandingBonusController: RequestHandler = async (req, res)
 
     const syndicateMeta = ExportSyndicates[request.Operation.AffiliationTag];
 
+    // Process items
     let gainedStanding = 0;
     request.Operation.Items.forEach(item => {
         const medallion = (syndicateMeta.medallions ?? []).find(medallion => medallion.itemType == item.ItemType);
@@ -21,9 +31,35 @@ export const syndicateStandingBonusController: RequestHandler = async (req, res)
 
         item.ItemCount *= -1;
     });
-
     const inventory = await getInventory(accountId);
     addMiscItems(inventory, request.Operation.Items);
+    const inventoryChanges: IInventoryChanges = {};
+    inventoryChanges.MiscItems = request.Operation.Items;
+
+    // Process modular weapon
+    if (request.Operation.ModularWeaponId.$oid != "000000000000000000000000") {
+        const category = req.query.Category as "LongGuns" | "Pistols" | "Melee" | "OperatorAmps";
+        const weapon = inventory[category].id(request.Operation.ModularWeaponId.$oid)!;
+        if (gainedStanding !== 0) {
+            throw new Error(`modular weapon standing bonus should be mutually exclusive`);
+        }
+        weapon.ModularParts!.forEach(part => {
+            const partStandingBonus = ExportWeapons[part].donationStandingBonus;
+            if (partStandingBonus === undefined) {
+                throw new Error(`no standing bonus for ${part}`);
+            }
+            logger.debug(`modular weapon part ${part} gives ${partStandingBonus} standing`);
+            gainedStanding += partStandingBonus;
+        });
+        if (weapon.Features && (weapon.Features & EquipmentFeatures.GILDED) != 0) {
+            gainedStanding *= 2;
+        }
+        inventoryChanges.RemovedIdItems = [{ ItemId: request.Operation.ModularWeaponId }];
+        inventory[category].pull({ _id: request.Operation.ModularWeaponId.$oid });
+        const slotBin = category == "OperatorAmps" ? InventorySlot.AMPS : InventorySlot.WEAPONS;
+        freeUpSlot(inventory, slotBin);
+        inventoryChanges[slotBin] = { count: -1, platinum: 0, Slots: 1 };
+    }
 
     let syndicate = inventory.Affiliations.find(x => x.Tag == request.Operation.AffiliationTag);
     if (!syndicate) {
@@ -50,9 +86,7 @@ export const syndicateStandingBonusController: RequestHandler = async (req, res)
     await inventory.save();
 
     res.json({
-        InventoryChanges: {
-            MiscItems: request.Operation.Items
-        },
+        InventoryChanges: inventoryChanges,
         AffiliationMods: [
             {
                 Tag: request.Operation.AffiliationTag,
@@ -67,6 +101,6 @@ interface ISyndicateStandingBonusRequest {
         AffiliationTag: string;
         AlternateBonusReward: ""; // ???
         Items: IMiscItem[];
+        ModularWeaponId: IOid;
     };
-    ModularWeaponId: IOid; // Seems to just be "000000000000000000000000", also note there's a "Category" query field
 }