diff --git a/Recyclable.Collections/IAddRangeProvider.cs b/Recyclable.Collections/IAddRangeProvider.cs
new file mode 100644
index 0000000..8928381
--- /dev/null
+++ b/Recyclable.Collections/IAddRangeProvider.cs
@@ -0,0 +1,9 @@
+namespace Recyclable.Collections
+{
+    internal interface IAddRangeProvider<T>
+    {
+        void AddRangeTo(RecyclableList<T> list);
+        void AddRangeTo(RecyclableLongList<T> list);
+    }
+}
+
diff --git a/Recyclable.Collections/RecyclableDictionary.cs b/Recyclable.Collections/RecyclableDictionary.cs
index 33cb849..f3d3c68 100644
--- a/Recyclable.Collections/RecyclableDictionary.cs
+++ b/Recyclable.Collections/RecyclableDictionary.cs
@@ -6,7 +6,7 @@ using Recyclable.Collections.Pools;
 
 namespace Recyclable.Collections
 {
-    internal sealed class RecyclableDictionary<TKey, TValue> : IEnumerable<KeyValuePair<TKey, TValue>>, IDisposable
+    internal sealed class RecyclableDictionary<TKey, TValue> : IEnumerable<KeyValuePair<TKey, TValue>>, IDisposable, IAddRangeProvider<KeyValuePair<TKey, TValue>>
         where TKey : notnull
     {
         internal static readonly bool _needsClearing = !typeof(TKey).IsValueType || !typeof(TValue).IsValueType;
@@ -401,5 +401,15 @@ namespace Recyclable.Collections
             {
             }
         }
+
+        void IAddRangeProvider<KeyValuePair<TKey, TValue>>.AddRangeTo(RecyclableList<KeyValuePair<TKey, TValue>> list)
+        {
+            zRecyclableListAddRange.AddRange(list, this);
+        }
+
+        void IAddRangeProvider<KeyValuePair<TKey, TValue>>.AddRangeTo(RecyclableLongList<KeyValuePair<TKey, TValue>> list)
+        {
+            zRecyclableLongListAddRange.AddRange(list, this);
+        }
     }
 }
diff --git a/Recyclable.Collections/RecyclableList.AddRange.cs b/Recyclable.Collections/RecyclableList.AddRange.cs
index e596115..f12696f 100644
--- a/Recyclable.Collections/RecyclableList.AddRange.cs
+++ b/Recyclable.Collections/RecyclableList.AddRange.cs
@@ -1,71 +1,11 @@
 using System.Collections;
 using System.Numerics;
 using System.Runtime.CompilerServices;
-using System.Linq.Expressions;
-using System.Reflection;
 
 namespace Recyclable.Collections
 {
         public static class zRecyclableListAddRange
         {
-                private static class AddRangeHelper<T>
-                {
-                        internal static readonly Type? DictionaryType;
-                        internal static readonly Type? SortedListType;
-                        internal static readonly Action<RecyclableList<T>, IEnumerable<T>>? DictionaryAdder;
-                        internal static readonly Action<RecyclableList<T>, IEnumerable<T>>? SortedListAdder;
-
-                        static AddRangeHelper()
-                        {
-                                var itemType = typeof(T);
-                                if (itemType.IsGenericType)
-                                {
-                                        var genericDefinition = itemType.GetGenericTypeDefinition();
-                                        if (genericDefinition == typeof(KeyValuePair<,>))
-                                        {
-                                                var args = itemType.GetGenericArguments();
-                                                DictionaryType = typeof(RecyclableDictionary<,>).MakeGenericType(args);
-
-                                                var listType = typeof(RecyclableList<>).MakeGenericType(itemType);
-                                                var method = typeof(zRecyclableListAddRange).GetMethod(
-                                                        nameof(AddRange),
-                                                        BindingFlags.NonPublic | BindingFlags.Static,
-                                                        null,
-                                                        new[] { listType, DictionaryType },
-                                                        null)!.MakeGenericMethod(args);
-
-                                                var listParam = Expression.Parameter(typeof(RecyclableList<T>), "list");
-                                                var itemsParam = Expression.Parameter(typeof(IEnumerable<T>), "items");
-                                                var call = Expression.Call(method,
-                                                        Expression.Convert(listParam, listType),
-                                                        Expression.Convert(itemsParam, DictionaryType));
-
-                                                DictionaryAdder = Expression.Lambda<Action<RecyclableList<T>, IEnumerable<T>>>(call, listParam, itemsParam).Compile();
-                                        }
-                                        else if (genericDefinition == typeof(ValueTuple<,>))
-                                        {
-                                                var args = itemType.GetGenericArguments();
-                                                SortedListType = typeof(RecyclableSortedList<,>).MakeGenericType(args);
-
-                                                var listType = typeof(RecyclableList<>).MakeGenericType(itemType);
-                                                var method = typeof(zRecyclableListAddRange).GetMethod(
-                                                        nameof(AddRange),
-                                                        BindingFlags.NonPublic | BindingFlags.Static,
-                                                        null,
-                                                        new[] { listType, SortedListType },
-                                                        null)!.MakeGenericMethod(args);
-
-                                                var listParam = Expression.Parameter(typeof(RecyclableList<T>), "list");
-                                                var itemsParam = Expression.Parameter(typeof(IEnumerable<T>), "items");
-                                                var call = Expression.Call(method,
-                                                        Expression.Convert(listParam, listType),
-                                                        Expression.Convert(itemsParam, SortedListType));
-
-                                                SortedListAdder = Expression.Lambda<Action<RecyclableList<T>, IEnumerable<T>>>(call, listParam, itemsParam).Compile();
-                                        }
-                                }
-                        }
-                }
 
                 private static void AddRangeEnumerated<T>(this RecyclableList<T> list, IEnumerable<T> items, int growByCount)
                 {
@@ -638,13 +578,9 @@ namespace Recyclable.Collections
                         {
                                 AddRange(list, sourceQueue);
                         }
-                        else if (AddRangeHelper<T>.DictionaryAdder != null && AddRangeHelper<T>.DictionaryType!.IsInstanceOfType(items))
+                        else if (items is IAddRangeProvider<T> provider)
                         {
-                                AddRangeHelper<T>.DictionaryAdder!(list, items);
-                        }
-                        else if (AddRangeHelper<T>.SortedListAdder != null && AddRangeHelper<T>.SortedListType!.IsInstanceOfType(items))
-                        {
-                                AddRangeHelper<T>.SortedListAdder!(list, items);
+                                provider.AddRangeTo(list);
                         }
                         else if (items is IReadOnlyList<T> sourceIReadOnlyList)
                         {
diff --git a/Recyclable.Collections/RecyclableLongList.AddRange.cs b/Recyclable.Collections/RecyclableLongList.AddRange.cs
index 321e28b..825963b 100644
--- a/Recyclable.Collections/RecyclableLongList.AddRange.cs
+++ b/Recyclable.Collections/RecyclableLongList.AddRange.cs
@@ -1,72 +1,12 @@
 using System.Collections;
 using System.Numerics;
 using System.Runtime.CompilerServices;
-using System.Linq.Expressions;
-using System.Reflection;
 using Recyclable.Collections.Pools;
 
 namespace Recyclable.Collections
 {
         public static class zRecyclableLongListAddRange
         {
-                private static class AddRangeHelper<T>
-                {
-                        internal static readonly Type? DictionaryType;
-                        internal static readonly Type? SortedListType;
-                        internal static readonly Action<RecyclableLongList<T>, IEnumerable<T>>? DictionaryAdder;
-                        internal static readonly Action<RecyclableLongList<T>, IEnumerable<T>>? SortedListAdder;
-
-                        static AddRangeHelper()
-                        {
-                                var itemType = typeof(T);
-                                if (itemType.IsGenericType)
-                                {
-                                        var genericDefinition = itemType.GetGenericTypeDefinition();
-                                        if (genericDefinition == typeof(KeyValuePair<,>))
-                                        {
-                                                var args = itemType.GetGenericArguments();
-                                                DictionaryType = typeof(RecyclableDictionary<,>).MakeGenericType(args);
-
-                                                var listType = typeof(RecyclableLongList<>).MakeGenericType(itemType);
-                                                var method = typeof(zRecyclableLongListAddRange).GetMethod(
-                                                        nameof(AddRange),
-                                                        BindingFlags.NonPublic | BindingFlags.Static,
-                                                        null,
-                                                        new[] { listType, DictionaryType },
-                                                        null)!.MakeGenericMethod(args);
-
-                                                var listParam = Expression.Parameter(typeof(RecyclableLongList<T>), "list");
-                                                var itemsParam = Expression.Parameter(typeof(IEnumerable<T>), "items");
-                                                var call = Expression.Call(method,
-                                                        Expression.Convert(listParam, listType),
-                                                        Expression.Convert(itemsParam, DictionaryType));
-
-                                                DictionaryAdder = Expression.Lambda<Action<RecyclableLongList<T>, IEnumerable<T>>>(call, listParam, itemsParam).Compile();
-                                        }
-                                        else if (genericDefinition == typeof(ValueTuple<,>))
-                                        {
-                                                var args = itemType.GetGenericArguments();
-                                                SortedListType = typeof(RecyclableSortedList<,>).MakeGenericType(args);
-
-                                                var listType = typeof(RecyclableLongList<>).MakeGenericType(itemType);
-                                                var method = typeof(zRecyclableLongListAddRange).GetMethod(
-                                                        nameof(AddRange),
-                                                        BindingFlags.NonPublic | BindingFlags.Static,
-                                                        null,
-                                                        new[] { listType, SortedListType },
-                                                        null)!.MakeGenericMethod(args);
-
-                                                var listParam = Expression.Parameter(typeof(RecyclableLongList<T>), "list");
-                                                var itemsParam = Expression.Parameter(typeof(IEnumerable<T>), "items");
-                                                var call = Expression.Call(method,
-                                                        Expression.Convert(listParam, listType),
-                                                        Expression.Convert(itemsParam, SortedListType));
-
-                                                SortedListAdder = Expression.Lambda<Action<RecyclableLongList<T>, IEnumerable<T>>>(call, listParam, itemsParam).Compile();
-                                        }
-                                }
-                        }
-                }
 
                 private static void AddRangeEnumerated<T>(this RecyclableLongList<T> targetList, IEnumerable<T> items)
                 {
@@ -499,12 +439,8 @@ namespace Recyclable.Collections
                                         targetList.AddRange(sourceQueue);
                                         return;
 
-                                case var _ when AddRangeHelper<T>.DictionaryAdder != null && AddRangeHelper<T>.DictionaryType!.IsInstanceOfType(items):
-                                        AddRangeHelper<T>.DictionaryAdder!(targetList, items);
-                                        return;
-
-                                case var _ when AddRangeHelper<T>.SortedListAdder != null && AddRangeHelper<T>.SortedListType!.IsInstanceOfType(items):
-                                        AddRangeHelper<T>.SortedListAdder!(targetList, items);
+                                case IAddRangeProvider<T> provider:
+                                        provider.AddRangeTo(targetList);
                                         return;
 
                                 default:
diff --git a/Recyclable.Collections/RecyclableSortedList.cs b/Recyclable.Collections/RecyclableSortedList.cs
index 9b371ea..b11ca58 100644
--- a/Recyclable.Collections/RecyclableSortedList.cs
+++ b/Recyclable.Collections/RecyclableSortedList.cs
@@ -5,7 +5,7 @@ using Recyclable.Collections.Pools;
 
 namespace Recyclable.Collections
 {
-    internal sealed class RecyclableSortedList<TKey, TValue> : IEnumerable<(TKey Key, TValue Value)>, IDisposable
+    internal sealed class RecyclableSortedList<TKey, TValue> : IEnumerable<(TKey Key, TValue Value)>, IDisposable, IAddRangeProvider<(TKey Key, TValue Value)>
         where TKey : notnull
     {
         internal static readonly bool _needsClearing = !typeof(TKey).IsValueType || !typeof(TValue).IsValueType;
@@ -276,5 +276,15 @@ namespace Recyclable.Collections
             {
             }
         }
+
+        void IAddRangeProvider<(TKey Key, TValue Value)>.AddRangeTo(RecyclableList<(TKey Key, TValue Value)> list)
+        {
+            zRecyclableListAddRange.AddRange(list, this);
+        }
+
+        void IAddRangeProvider<(TKey Key, TValue Value)>.AddRangeTo(RecyclableLongList<(TKey Key, TValue Value)> list)
+        {
+            zRecyclableLongListAddRange.AddRange(list, this);
+        }
     }
 }