diff --git a/core/logic/smn_adt_array.cpp b/core/logic/smn_adt_array.cpp
index 6e6a5c61..b8694bce 100644
--- a/core/logic/smn_adt_array.cpp
+++ b/core/logic/smn_adt_array.cpp
@@ -580,6 +580,21 @@ static cell_t FindValueInArray(IPluginContext *pContext, const cell_t *params)
 	return -1;
 }
 
+static cell_t GetArrayBlockSize(IPluginContext *pContext, const cell_t *params)
+{
+	CellArray *array;
+	HandleError err;
+	HandleSecurity sec(pContext->GetIdentity(), g_pCoreIdent);
+
+	if ((err = handlesys->ReadHandle(params[1], htCellArray, &sec, (void **)&array))
+		!= HandleError_None)
+	{
+		return pContext->ThrowNativeError("Invalid Handle %x (error: %d)", params[1], err);
+	}
+
+	return array->blocksize();
+}
+
 REGISTER_NATIVES(cellArrayNatives)
 {
 	{"ClearArray",					ClearArray},
@@ -601,6 +616,7 @@ REGISTER_NATIVES(cellArrayNatives)
 	{"CloneArray",					CloneArray},
 	{"FindStringInArray",			FindStringInArray},
 	{"FindValueInArray",			FindValueInArray},
+	{"GetArrayBlockSize",			GetArrayBlockSize},
 
 	// Transitional syntax support.
 	{"ArrayList.ArrayList",			CreateArray},
@@ -622,6 +638,7 @@ REGISTER_NATIVES(cellArrayNatives)
 	{"ArrayList.Clone",				CloneArray},
 	{"ArrayList.FindString",		FindStringInArray},
 	{"ArrayList.FindValue",			FindValueInArray},
+	{"ArrayList.BlockSize.get",		GetArrayBlockSize},
 
 	{NULL,							NULL},
 };
diff --git a/core/logic/smn_adt_stack.cpp b/core/logic/smn_adt_stack.cpp
index 0a7c8734..670a5ead 100644
--- a/core/logic/smn_adt_stack.cpp
+++ b/core/logic/smn_adt_stack.cpp
@@ -369,6 +369,21 @@ static cell_t ArrayStack_PopArray(IPluginContext *pContext, const cell_t *params
 	return 0;
 }
 
+static cell_t GetStackBlockSize(IPluginContext *pContext, const cell_t *params)
+{
+	HandleError err;
+	CellArray *array;
+	HandleSecurity sec(pContext->GetIdentity(), g_pCoreIdent);
+
+	if ((err = handlesys->ReadHandle(params[1], htCellStack, &sec, (void **)&array))
+		!= HandleError_None)
+	{
+		return pContext->ThrowNativeError("Invalid Handle %x (error: %d)", params[1], err);
+	}
+
+	return array->blocksize();
+}
+
 REGISTER_NATIVES(cellStackNatives)
 {
 	{"CreateStack",					CreateStack},
@@ -379,6 +394,7 @@ REGISTER_NATIVES(cellStackNatives)
 	{"PushStackArray",				PushStackArray},
 	{"PushStackCell",				PushStackCell},
 	{"PushStackString",				PushStackString},
+	{"GetStackBlockSize",			GetStackBlockSize},
 
 	// Transitional syntax support.
 	{"ArrayStack.ArrayStack",		CreateStack},
@@ -389,6 +405,7 @@ REGISTER_NATIVES(cellStackNatives)
 	{"ArrayStack.PushString",		PushStackString},
 	{"ArrayStack.PushArray",		PushStackArray},
 	{"ArrayStack.Empty.get",		IsStackEmpty},
+	{"ArrayStack.BlockSize.get",	GetStackBlockSize},
 
 	{NULL,							NULL},
 };
diff --git a/plugins/include/adt_array.inc b/plugins/include/adt_array.inc
index 77b292ff..043898df 100644
--- a/plugins/include/adt_array.inc
+++ b/plugins/include/adt_array.inc
@@ -212,6 +212,11 @@ methodmap ArrayList < Handle {
 	property int Length {
 		public native get();
 	}
+	
+	// Retrieve the blocksize the array was created with.
+	property int BlockSize {
+		public native get();
+	}
 };
 
 /**
@@ -439,3 +444,12 @@ native int FindStringInArray(Handle array, const char[] item);
  * @error				Invalid Handle or invalid block
  */
 native int FindValueInArray(Handle array, any item, int block=0);
+
+/**
+ * Returns the blocksize the array was created with.
+ *
+ * @param array			Array Handle.
+ * @return 				The blocksize of the array.
+ * @error				Invalid Handle
+ */
+native int GetArrayBlockSize(Handle array);
diff --git a/plugins/include/adt_stack.inc b/plugins/include/adt_stack.inc
index 0ffdc86f..b841a0aa 100644
--- a/plugins/include/adt_stack.inc
+++ b/plugins/include/adt_stack.inc
@@ -109,6 +109,11 @@ methodmap ArrayStack < Handle
 	property bool Empty {
 		public native get();
 	}
+	
+	// Retrieve the blocksize the stack was created with.
+	property int BlockSize {
+		public native get();
+	}
 };
 
 /**
@@ -224,3 +229,12 @@ stock bool PopStack(Handle stack)
 	int value;
 	return PopStackCell(stack, value);
 }
+
+/**
+ * Returns the blocksize the stack was created with.
+ *
+ * @param stack			Stack Handle.
+ * @return 				The blocksize of the stack.
+ * @error				Invalid Handle
+ */
+native int GetStackBlockSize(Handle stack);