ACE AR style folding stock adapter, anyone used it?

[why.kyle]

Has anyone used this product before?

http://store.carolinashooterssupply.com/servlet/-strse-254/ACE-Saiga-folding-AR15/Detail?sfs=4dd20830

Do you need a castle nut to keep the buffer tube on? or just screw in the buffer tube and your set?
Anyone have a review to share?

 

[ZGunner]

I've never used it. But it looks like it'd be just like screwing it into a lower receiver with now receiver plate. It would probably work fine by screwing the buffer tube in on it's own, that nut would add an extra locking point though.