diff --git a/index.html b/index.html
index 473f75d..a040f63 100644
--- a/index.html
+++ b/index.html
@@ -87,6 +87,136 @@ <h2>🛠 Recommended Print Settings</h2>
                 </div>
             </section>
 
+            <section id="tools-hardware">
+                <h2>🧰 Prerequisites & Bill of Materials</h2>
+                
+                <h3>📋 Prerequisites</h3>
+                <div class="important">
+                    <ul>
+                        <li>Previous experience with 3D printing.</li>
+                        <li>Basic knowledge of airsoft components and assembly.</li>
+                        <li>Familiarity with HPA systems.</li>
+                    </ul>
+                </div>
+
+                <h3>🧰 Tools Required</h3>
+                <table>
+                    <thead>
+                        <tr>
+                            <th>Tool</th>
+                            <th>Description</th>
+                        </tr>
+                    </thead>
+                    <tbody>
+                        <tr>
+                            <td><strong>Hex Key Set</strong></td>
+                            <td>Metric keys (specifically for M3 screws).</td>
+                        </tr>
+                        <tr>
+                            <td><strong>Soldering Iron</strong></td>
+                            <td>Essential for installing M3 brass inserts.</td>
+                        </tr>
+                        <tr>
+                            <td><strong>Sandpaper/Files</strong></td>
+                            <td>For smoothing surfaces and fitting parts.</td>
+                        </tr>
+                        <tr>
+                            <td><strong>Rotary Tool</strong></td>
+                            <td>Dremel or similar for fine-tuning tolerances.</td>
+                        </tr>
+                    </tbody>
+                </table>
+
+                <h3>🛒 Bill of Materials (BOM)</h3>
+                <h4>Commercial Components</h4>
+                <table>
+                    <thead>
+                        <tr>
+                            <th>Component</th>
+                            <th>Specification / Note</th>
+                        </tr>
+                    </thead>
+                    <tbody>
+                        <tr>
+                            <td><strong>HPA Engine</strong></td>
+                            <td>Polarstar F2</td>
+                        </tr>
+                        <tr>
+                            <td><strong>Hopup Unit</strong></td>
+                            <td>Maxx Model or Polarstar "Hopup Thing"</td>
+                        </tr>
+                        <tr>
+                            <td><strong>Inner Barrel</strong></td>
+                            <td>160mm precision barrel</td>
+                        </tr>
+                        <tr>
+                            <td><strong>Trigger</strong></td>
+                            <td>Adjustable trigger blade</td>
+                        </tr>
+                        <tr>
+                            <td><strong>Thread Adapter</strong></td>
+                            <td>12mm to 14mm CCW (for tracer/suppressor)</td>
+                        </tr>
+                        <tr>
+                            <td><strong>Stock Tube</strong></td>
+                            <td>Carbon Fiber Tube (28mm ID x 30mm OD)</td>
+                        </tr>
+                    </tbody>
+                </table>
+
+                <h4>Hardware</h4>
+                <table>
+                    <thead>
+                        <tr>
+                            <th>Item</th>
+                            <th>Details</th>
+                        </tr>
+                    </thead>
+                    <tbody>
+                        <tr>
+                            <td><strong>M3 Brass Inserts</strong></td>
+                            <td>Heat-set type</td>
+                        </tr>
+                        <tr>
+                            <td><strong>M3 Screws</strong></td>
+                            <td>Set from 5mm to 15mm</td>
+                        </tr>
+                        <tr>
+                            <td><strong>M5 Screw & Nut</strong></td>
+                            <td>1 set</td>
+                        </tr>
+                        <tr>
+                            <td><strong>Springs</strong></td>
+                            <td>Mag Catch spring</td>
+                        </tr>
+                    </tbody>
+                </table>
+
+                <h4>🖨️ Printed Parts</h4>
+                <table>
+                    <thead>
+                        <tr>
+                            <th>Group</th>
+                            <th>Parts</th>
+                        </tr>
+                    </thead>
+                    <tbody>
+                        <tr>
+                            <td><strong>Receiver & Front</strong></td>
+                            <td>Lower Receiver, Upper Receiver, Handguard, Outer Barrel</td>
+                        </tr>
+                        <tr>
+                            <td><strong>Controls</strong></td>
+                            <td>Trigger Housing, Fire Selector, Selector Plate, Pistol Grip, Mag Release</td>
+                        </tr>
+                        <tr>
+                            <td><strong>Stock</strong></td>
+                            <td>Stock Adapter, Stock</td>
+                        </tr>
+                    </tbody>
+                </table>
+            </section>
+
             <div class="assembly-intro">
                 <h2>🔩 Assembly Guide</h2>
                 <!-- Menu de Navegação Rápida -->