Yeah, it is/was a schienen(rail/rib) drilling with a small calibre in the top rib for off season longarms which allowed for more ease of motion. I think the term was schonzeit drilling which were suppose to handle like doubles. But it has draw-backs such as not have the possibility of a pop-up sight, automatic or manual, in the top rib and scope mounts or cuts in the top rib might compromise the integrity of the rifle. The longarm is listed in the SxS section but he has one of 2 things: either a schienen drilling or a schienen drilling receiver with a SxS set of tubes.
Kind Regards,
Raimey
rse
Last edited by ellenbr; 05/03/09 08:49 AM.
