If you are restoring your G43 or K43 rifle the cross bult lug is a part that you might forget to order.
If you have a brand new stock many times the cross bolt lug is not included.

When you install this part, don't bang it in with a hammer, it could damage the wood, it should go into the stock very tightly, you might need to remove a small amount of wood in the recess where the cross bolt lug is placed.