You may have something there about a European preference.
According to Browning customer service, one recoils spring is correct.
Hello Arnold,
Thank you for the email. Your A5 should only have 1 recoil-spring. It might be a good idea to take your gun to a local gunsmith to find out why you have 2.
Best Regards,
Browning Customer Service
www.Browning.com800-333-3288
TR