Simple network replication for hands, untested.

Content.Shared/Content.Shared.csproj

@@ -56,6 +56,8 @@
   <ItemGroup>
     <Compile Include="EntryPoint.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
+    <Compile Include="GameObjects\Components\Items\HandsComponent.cs" />
+    <Compile Include="GameObjects\Components\NetIDs.cs" />
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\engine\Lidgren.Network\Lidgren.Network.csproj">

Content.Shared/GameObjects/Components/Items/HandsComponent.cs

@@ -0,0 +1,25 @@
+using SS14.Shared.GameObjects;
+using System;
+using System.Collections.Generic;
+
+namespace Content.Shared.GameObjects
+{
+    public abstract class SharedHandsComponent : Component
+    {
+        public sealed override string Name => "Hands";
+        public sealed override uint? NetID => ContentNetIDs.HANDS;
+        public sealed override Type StateType => typeof(HandsComponentState);
+    }
+
+    // The IDs of the items get synced over the network.
+    [Serializable]
+    public class HandsComponentState : ComponentState
+    {
+        public readonly Dictionary<string, int> Hands;
+
+        public HandsComponentState(Dictionary<string, int> hands)
+        {
+            Hands = hands;
+        }
+    }
+}

Content.Shared/GameObjects/Components/NetIDs.cs

@@ -0,0 +1,7 @@
+namespace Content.Shared.GameObjects
+{
+    public static class ContentNetIDs
+    {
+        public const uint HANDS = 0;
+    }
+}