Anyone know of a good weaver mount for aimpoint?

I'm pretty sure it has a picatinny rail so not sure your query about a weaver mount, but maybe I'm missing something subtle about your question. And it makes a little bit of difference which aimpoint and what height you want. But my general go to on aimpoint mounts is Bobro. With Larue a close second. And MI third.
FWIW>

I prefer the ADM mounts myself.

The diopter sights I have use an 11mm rail so that’s why I’m looking for a weaver mount.

Not sure what you are trying to do. The 551A1 comes with a picatinny rail attached to the top of the receiver. There are literally dozens of Aimpoint picatinny mounts available, plus most Aimpoints come with a mount. Are you trying to use a weaver mount instead of a picatinny mount, or you trying to replace the rail? There are very few options for replacing that top rail because the screw spacing is unique.

I too am not fully sure I understand what you want to do. But an 11mm dovetail is a common item on euro guns and aimpoint offers a mount for it. I use it on my Hammerli and CZ. For sure fits the micro ones as that's the one I use, but there may be a model for others.
I got mine here, but they are everywhere.
https://www.midwayusa.com/prod...dovetail-mount-matte