Does anyone here have experience with the subject firearm? A friend has one in 7x57R over 12 ga. that ssms to be a well made, accurate arm. However, there is one oddity that begs explanation: There seems to be no way to remove the forend from the barrels. That is, there is no visible means of fastening the forend on to the barrels - no screw, pin, anything that we can see. Does anyone have a clue?

Another thing, he would dearly love to have a set of rifle barrels for this arm. Does anyone know of a source?