Prestige final reward weapon blueprints unlocked but not showing in Gunsmith?

Hi everyone, I’m still pretty new to Warzone so sorry if this is a dumb question.

I noticed something odd with Prestige rewards. After unlocking Prestige rewards like operators, stickers, accessories, etc., I can find all of them normally in my inventory.

However, for the final Prestige rewards (the weapon blueprints you unlock at the last level), they show as unlocked, but I can’t find them in the Gunsmith.

For example, at Prestige 1 final level, the reward is the MXR-17 blueprint called “Cipher Wrap.” It shows as unlocked, but when I check the MXR-17 blueprints, I only see “Firing Line” and not Cipher Wrap.

This seems to happen again with later Prestiges as well — the final weapon blueprint is unlocked, but doesn’t appear anywhere for me to equip.

I attached two screenshots for reference.

Is this a known bug, or am I missing something obvious here?