Upgraded K40 Laser Lens and Mirror bases

I am designing a new gantry for my K40 laser cutter and I am using new laser head and mirror mounts from Cloudray (purchased via Amazon). Since i couldn't find any 3D models of them on the web, I modeled them myself for use in my own design. I figured I would post them here so that others may benefit from my modeling time. All dimensions based on caliper measurements. They are definitely not perfect, but they should be damn close and certainly good enough to use in your own designs.

There are three models: Laser Head, 1st mirror base, and 2nd mirror base.
NOTE: I purchased (and modeled) the 18mm diameter lens version.

Each of these three parts is in reality an assembly in itself, but I did not model screws and parts separately, as it felt like a waste of time. So the three models are part files, with basic screws, etc modeled into the solid part. The things that are important for use in making your own laser cutter parts (the relative dimensions between reflecting surfaces, position of cutting plane, etc) are captured in the models as well as a 2D drawing, in case the DTM planes don't come through in your CAD program.

As always, i have uploaded STEP and native SolidWorks files along with the STLs.

DISCLAIMERS:
I did not design these parts. I purchased them from Amazon and measured the parts I purchased.

Links to products:
Cloudray individual parts: https://www.cloudraylaser.com/collections/laser-head-mirror-base-1/products/lc4060-laser-head-blue-12-18-20-50-8?variant=12871497383987

Cloudray lot of all three: https://www.cloudraylaser.com/collections/laser-head-mirror-base-1/products/cloudray-co2-laser-head-set-for-2030-4060-k40-laser-engraving-cutting-machine?variant=7698567102515

I bought my lot from Amazon because it was cheaper and had free shipping: https://www.cloudraylaser.com/collections/laser-head-mirror-base-1/products/cloudray-co2-laser-head-set-for-2030-4060-k40-laser-engraving-cutting-machine?variant=7698567102515