The VFC RAS does fit the WE Apache as standard but I found the rails were all angled down slightly and it didn't lock up very securely. This is two models that should fix that angle and help lock it all down.
It also has the added bonus of not scratching off any of the paint on the bottom anymore as there handguard no longer touches the receiver.
Installation
For ‘KAC rail spacer top’: place it into the hole in the receiver under the hop unit.
For ‘KAC rail spacer bottom’: place it into the gap on the bottom of the handguard. Try to make it flush with the face shown in the image below. (It may need some light sanding to fit nicely.)
The author marked this model as their own original creation.