Mossberg 500 laser sight: Monstrum Red Laser Sight System

[Suspirium Puellarum]

Has anyone seen one of these? For $40 it sounds like great fun. . . if it works properly! Any advice/comments would be appreciated.

https://www.amazon.com/Monstrum-Picatinny-Mossberg-Shockwave-Shotguns/dp/B09C2S569F/ref=sr_1_1_sspa?crid=29GHUXXSKG34I&keywords=mossberg+500&qid=1662495505&sprefix=mossberg+500%2Caps%2C139&sr=8-1-spons&psc=1&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUEzM0VQQ01IMEhGOU5IJmVuY3J5cHRlZElkPUEwOTgxNjgyUVpOR0cwR0RONERaJmVuY3J5cHRlZEFkSWQ9QTAxNDQ4OTM0NFRLMlBWU0JLVEMmd2lkZ2V0TmFtZT1zcF9hdGYmYWN0aW9uPWNsaWNrUmVkaXJlY3QmZG9Ob3RMb2dDbGljaz10cnVl