Remove Stealth buffer tube

[docw2015]

Have a 6.5 BA10 Stealth. I have already removed the little set screw behind the grip. Cant seem to get the castle nut to budge. Has anyone else been able to remove it? Does it take excessive force?

[Palmaris]

This is the first thing I did-removed stock stock with buffer tube. Even before I went to try her. Used AR15 armorer tool, it was pretty easy. Installed XLR tactical stock. Prior to that chop off some threads on XLR tube, so I don't have to use castle nut.

https://i.imgur.com/geP8RwZ.jpg?1
https://i.imgur.com/mgwP5TW.jpg?1

This is latest modification I did to my Stealth-chop of half of cheek raiser


https://i.imgur.com/NZAnnCU.jpg?1
https://i.imgur.com/d8xRcIN.jpg?1