Different MHS heatsink compatibility?

I'm wondering if the copper part in these two pieces is the same size. They look very similar, but I want to make sure.

http://www.thecustomsabershop.com/12...der--P269.aspx

http://www.thecustomsabershop.com/MH...k-V3-P782.aspx

I'm thinking of using a fully customizable RGrB. I'm making a sink tube saber right now, but I'd like to have my entire electronic setup removable and able to put into either a different sink tube, or hopefully in the future, a MHS build. I'm using a standard switch (easier to remove than an AV setup).

Maybe I'm just cheaper than Scrooge, but I don't see the point in having several LEDs if I can get multiple colors from one star. Thus, the idea of having multiple empty, compatible hilts and one set of electronics.

I can confirm that the heat sinks are identical and I've swapped LED/heatsink/lens between the two before.

Awesome! Thank you.