Wait until you use different lubes at different temperatures and you have to tune it to those conditions. I bought a 3.5" BPS for goose and haven't shot my A5 in a while. They may not be the easiest to run but they are cool and the 1st successful mass produced semi auto shotgun to come out. It has a history. The old school guys I hunt with run A5s.Oh my Lord, I watched 5 minutes of that video and I hate that gun even more now. The SBE is just so nice in comparison. So maintenance free. Just trying to remember how those friction rings are supposed to go is giving me a headache.
Mine is a Japanese version that handles steel well, it also has removable chokes. There is nothing like the sound when you hit the button and close the bolt on and A5. They also recoil light when tuned right, mine has run 100% for me. If I shoot target loads I switch up the main spring and ring setup.