Amazing what people can do to louse up a good gun.

My 20ga Citori has about 30K shells through it and the lever is still to the right in the same place as when the gun was delivered 15 years ago.

The gun is cleaned of grease each outing, and new engine assembly lube applied. I expect it to never need 're-bolting' in my lifetime.

Should it ever start 'popping open' my first move would be to replace the top lever spring. This can be obtained in an aftermarket kit which includes firing pins and mainsprings. It costs about $60 and is a common service item for Browning shooters. I installed a kit for a friend once, if you have spring pliers it takes about half an hour to accomplish.

The only failure I've seen in the 680 series guns is broken hammers. I've seen 3. One was my trap gun at 50K rounds.

They are both very stout serviceable designs.

"The price of good shotgunnery is constant practice" - Fred Kimble