I bought one in 308 and have had no problems with mine. A little blueing has worn off some contact areas but nothing major. I tend to use the feature alot puting it together and taking it apart to put in behind the seat of my truck many, many, times last hunting season.
In regards to scope mounting. When I purchased the gun, the salesman said that they are not guaranteed to remain zeroed with a conventional scope mount, especially if you take it apart alot. I put a 'scout' mount and leopold scout scope on mine and have had no problems. It makes a great bush rig, I just wish my rifle didnt despise 180gr bullets.
Hope this helps some
Luke