They fit just like any other 10/22 barrel. Remove from stock. Take off the lug (two allen bolts). Pull out barrel. Reverse with new barrel.
I have no issue offering Shilen 10/22 or any other barrel they make. Costs have actually gone down with the stronger dollar.
A bit more then a BC with the potential for much better accuracy.
apapro, please send mailing info so I can forward an invoice. Thanks,
Jerry