Blaze of glory

Why does The Blaze of Glory eject a shotgun shell after every shot if you get 5 out of one hard light cell

From my understanding, the Blaze of Glory fires hardlight projectiles which are stored in shells. The reload animation which only requires one shell is a gameplay choice, but that one “shell” contains 5 shells. So what you see getting thrown out after every pump is a spent shell of hardlight projectiles. It’s a crude explanation and I could be mistaken, but that’s how I believe it works.