....that you use. It's "L " shaped with a guide that fits in the .22 chamber. A fatter disc area is behind that fits over the feed ramp. You turn the tool like a bolt unlocking. This rotates the upper locking stud to where it can slide back. Just gently push it out with a .30 cal cleaning rod.

If you have just the bbl. and want to sell it , I'd like first dibs.
Chris

Oh , if your going to shoot '06 , be aware that the ejector was removed and needs to be replaced. If the ejector's in the gun , It'll need to be removed so the bbl locking lug can pass , allowing the insert to slide out.