Having had a play with Jeff's Extrema in Greece last year I had to get one. It is certainly the best gun that I have ever owned, but yes, i know, most were Remingtons. Mine will work anything from 24g 2 1/2" up to 63g 3 1/2" shells. You need to add the extended bolt release as a priority, mine came from Angleport and it transforms the gun. I have not gone with the big safety yet but I might. As for flip up rifle sights, ah yes Jeff, rifle sights, I am looking into it but no news as yet.
If not before, I'll see y'all Brighton, 2010
Geoff