No buttstock spring in an old A5 either.
If it's an old one, a wipe down of the outside of the mag tube, and make sure your friction rings are properly installed.
I don't know squat about the new A5's, but my Benelli M2 was getting ready to get tripped due to crappy cycling, until I did a little research and discovered the action spring in the buttstock issue, which has now been addressed.
The jury is still out on the M2, but I swear if it doesn't pan out, I am going back to my trusty Belgium A5's and calling it a career.
I love those old humpbacks!
There are replacement SS action springs available.
http://www.mackspw.com/Item--i-SRMSCSSA