diff --git a/src/main/java/com/onixbyte/deltaforceguide/domain/entity/Accessory.java b/src/main/java/com/onixbyte/deltaforceguide/domain/entity/Accessory.java
new file mode 100644
index 0000000..8c4b6b9
--- /dev/null
+++ b/src/main/java/com/onixbyte/deltaforceguide/domain/entity/Accessory.java
@@ -0,0 +1,48 @@
+package com.onixbyte.deltaforceguide.domain.entity;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class Accessory {
+
+    private String slotName;
+
+    private String accessoryName;
+
+    private List<Tuning> tunings = new ArrayList<>();
+
+    public Accessory() {
+    }
+
+    public String getSlotName() {
+        return slotName;
+    }
+
+    public void setSlotName(String slotName) {
+        this.slotName = slotName;
+    }
+
+    public String getAccessoryName() {
+        return accessoryName;
+    }
+
+    public void setAccessoryName(String accessoryName) {
+        this.accessoryName = accessoryName;
+    }
+
+    public List<Tuning> getTunings() {
+        return tunings;
+    }
+
+    public void setTunings(List<Tuning> tunings) {
+        this.tunings = tunings;
+    }
+
+    public void addTuning(Tuning tuning) {
+        this.tunings.add(tuning);
+    }
+
+    public void removeTuning(Tuning tuning) {
+        this.tunings.remove(tuning);
+    }
+}
diff --git a/src/main/java/com/onixbyte/deltaforceguide/domain/entity/Modification.java b/src/main/java/com/onixbyte/deltaforceguide/domain/entity/Modification.java
index 6ed3ec6..ed145b5 100644
--- a/src/main/java/com/onixbyte/deltaforceguide/domain/entity/Modification.java
+++ b/src/main/java/com/onixbyte/deltaforceguide/domain/entity/Modification.java
@@ -1,17 +1,7 @@
 package com.onixbyte.deltaforceguide.domain.entity;
 
 import io.hypersistence.utils.hibernate.type.json.JsonType;
-import jakarta.persistence.Column;
-import jakarta.persistence.Entity;
-import jakarta.persistence.FetchType;
-import jakarta.persistence.ForeignKey;
-import jakarta.persistence.GeneratedValue;
-import jakarta.persistence.GenerationType;
-import jakarta.persistence.Id;
-import jakarta.persistence.Index;
-import jakarta.persistence.JoinColumn;
-import jakarta.persistence.ManyToOne;
-import jakarta.persistence.Table;
+import jakarta.persistence.*;
 import org.hibernate.annotations.Type;
 
 import java.util.ArrayList;
@@ -41,9 +31,13 @@ public class Modification {
     private String code;
 
     @Type(JsonType.class)
-    @Column(name = "tags", columnDefinition = "json")
+    @Column(name = "tags", columnDefinition = "jsonb")
     private List<String> tags = new ArrayList<>();
 
+    @Type(JsonType.class)
+    @Column(name = "accessories", columnDefinition = "jsonb")
+    private List<Accessory> accessories = new ArrayList<>();
+
     @Column(name = "note", columnDefinition = "TEXT")
     private String note;
 
@@ -93,6 +87,22 @@ public class Modification {
         this.tags = tags;
     }
 
+    public List<Accessory> getAccessories() {
+        return accessories;
+    }
+
+    public void setAccessories(List<Accessory> accessories) {
+        this.accessories = accessories;
+    }
+
+    public void addAccessory(Accessory modificationAccessory) {
+        this.accessories.add(modificationAccessory);
+    }
+
+    public void removeAccessory(Accessory modificationAccessory) {
+        this.accessories.remove(modificationAccessory);
+    }
+
     public String getNote() {
         return note;
     }
@@ -128,6 +138,7 @@ public class Modification {
         private String name;
         private String code;
         private List<String> tags;
+        private List<Accessory> accessories;
         private String note;
         private String author;
         private String videoUrl;
@@ -157,6 +168,11 @@ public class Modification {
             return this;
         }
 
+        public Builder accessories(List<Accessory> accessories) {
+            this.accessories = accessories;
+            return this;
+        }
+
         public Builder note(String note) {
             this.note = note;
             return this;
@@ -179,6 +195,7 @@ public class Modification {
             modification.name = this.name;
             modification.code = this.code;
             modification.tags = this.tags == null ? new ArrayList<>() : this.tags;
+            modification.accessories = this.accessories == null ? new ArrayList<>() : this.accessories;
             modification.note = this.note;
             modification.author = this.author;
             modification.videoUrl = this.videoUrl;
diff --git a/src/main/java/com/onixbyte/deltaforceguide/domain/entity/Tuning.java b/src/main/java/com/onixbyte/deltaforceguide/domain/entity/Tuning.java
new file mode 100644
index 0000000..4ab9879
--- /dev/null
+++ b/src/main/java/com/onixbyte/deltaforceguide/domain/entity/Tuning.java
@@ -0,0 +1,26 @@
+package com.onixbyte.deltaforceguide.domain.entity;
+
+public class Tuning {
+
+    private String tuningName;
+    private Double tuningValue;
+
+    public Tuning() {
+    }
+
+    public String getTuningName() {
+        return tuningName;
+    }
+
+    public void setTuningName(String tuningName) {
+        this.tuningName = tuningName;
+    }
+
+    public Double getTuningValue() {
+        return tuningValue;
+    }
+
+    public void setTuningValue(Double tuningValue) {
+        this.tuningValue = tuningValue;
+    }
+}
diff --git a/src/main/resources/db/migration/V5__modification_accessories.sql b/src/main/resources/db/migration/V5__modification_accessories.sql
new file mode 100644
index 0000000..1450826
--- /dev/null
+++ b/src/main/resources/db/migration/V5__modification_accessories.sql
@@ -0,0 +1,2 @@
+ALTER TABLE modification
+    ADD accessories JSONB NOT NULL DEFAULT '[]';
\ No newline at end of file