Capability and capacity are two very different things.
Yes, I understand the manufacturing capability exists, but it's capacity is limited i.e. existing facilities could not maintain a strategically significant production volume relative to Ukraine's needs, much less to deter Putin.
I understand exactly what it is. What I'm saying is that Germany does not have the volume on hand, or the manufacturing capacity to produce such a volume, where it could generate the effect the candidate is implying it can.