hk416 .22lr buttstock...removal

[rabies]

anyone have one of these umarex hk 416d rifles?
iv had mines for awhile now and finaly want to get rid of the bulky butt stock. its milspec size i know.

anyone every take it off the tube? its not like a normal AR stock

plz hook me up with pics or info how to take it off the tube. thanx
(google and youtube doesnt have anything)

and while im here. has anyone figured out how to get the bolt/charging handle out to actualy clean it. the standard field strip and clean isnt enough.
i think i read sumwhere that you have to actualy remove the barrel and barrel nut