BOWA BR-M-79-1 Beam Spray Gun by Lockon5500 on DeviantArt
Gundam HG The Origin 1/144 GM Guard Custom (E-2 Spray Gun Equipped) Exclusive Model Kit
Lets Talk Gundam but he doesn't have COVID anymore on Twitter: "A Beam Gun was also avalible, codenamed the BOWA BG-M-79f-3A. It is the testbed between the Beam Rifle and Spray Gun.