In the codex for space marines i can find the datasheet for the "basic" Captain. If i want to add that captain to my Hellblasters i have to give the captain a plasma pistol. But then im gonna take a look at the Warhammer shop i can nowhere find a basic captain that contains a plasma pistol in his sprue. I also dont see a basic captain that has a power fist or a master-crafted power weapon. But the power fist and master-crafted power weapon is not what i am looking for for my army.

Is this a mistake from Games Workshop? or am i missing something here? or do i need to take a plasma pistol that i have left from my hellblasters and smack it on a random captain?