diff --git a/src/mod.ts b/src/mod.ts
index 532c361..e08c607 100644
--- a/src/mod.ts
+++ b/src/mod.ts
@@ -161,9 +161,9 @@ class TheBlacklistMod implements IPostDBLoadMod {
     const currentFleaPrice = prices[item._id];
     let newPrice: number;
 
-    if (item._props.ammoType === "bullet") {
+    if (this.isAmmo(item)) {
       newPrice = this.getUpdatedAmmoPrice(item);
-    } else if (Number(item._props.armorClass) > 0 && item._props.armorZone?.some(zone => zone === "Chest")) {
+    } else if (this.isArmour(item)) {
       newPrice = this.getUpdatedArmourPrice(item);
     }
 
@@ -172,6 +172,15 @@ class TheBlacklistMod implements IPostDBLoadMod {
     return price && price * config.blacklistedItemPriceMultiplier;
   }
 
+  private isAmmo(item: ITemplateItem): boolean {
+    const ammoRoundsHandbookId = "5485a8684bdc2da71d8b4567";
+    return item._parent === ammoRoundsHandbookId;
+  }
+
+  private isArmour(item: ITemplateItem): boolean {
+    return Number(item._props.armorClass) > 0 && item._props.armorZone?.some(zone => zone === "Chest")
+  }
+
   private getUpdatedAmmoPrice(item: ITemplateItem) {
     const baselinePen = this.baselineBullet._props.PenetrationPower;
     const baselineDamage = this.baselineBullet._props.Damage;