Thanks for reaching out, Pedro! I wish I could test the Baby UpLula out on the Browning BDA for you, but I'm afraid that I haven't got that firearm handy. From what I've reviewed on the internet, however, the Baby UpLula does not appear to work well on a BDA magazine. I know you'd rather not risk buying an accessory that isn't compatible with your firearm, so I regret that I can't recommend the Baby UpLula to you in good faith!