This is a past project.
When I was creating the Blue Destiny Unit 3, I found a twin beam rifle with a shield, so I researched it and created this based on an image I came across.
I increased the amount of blue compared to the Blue Destiny Unit 3's design and made the color brighter.
Since I don't have the skills to create it from scratch using plastic sheets, I made it by buying and attaching junk parts and commercially available option parts.
Large Beam Rifle

HG Blue Destiny Unit 3 Full Armed | 積み機クズ師's Gunpla works