There have been a few questions as to whether one can get a 18.5" cylinder bore barrel to turn an 835 into a tactical shotgun. I had an 835 and just traded it for a tactical 500 because I thought you could not get this type of barrel for an 835. Well I just got the following email from Roger Montalvo at Maverick Arms:
So if you have an 835 and want a short cylinder bore barrel, you can get one from Maverick Arms.