1100 20 ga ?

[SCDieselDawg]

Trying to help my Dad setup his 20 ga 1100 magnum. He's needing a red dot sight due to not be able to clearly see the bead or fiber optic sights. I've been researching the Burris Speed bead and was wondering if the mount will work on a 1100 Magnum light 20?  If not are there any other options to mount optics that do not require drilling and tapping the receiver?   

[SCDieselDawg]

Thanks!!  Guess we'll keep searching then!