37mm to 26.5mm Cartridge Adapter

Let me start by saying that the title does specify that this is made for a 37MM launcher.
I tried to use this in my real M203 and it does not work due to the extractor rim thickness being to large. Nothing a simple lathe job wont fix, but I want those of you with real 40MM launcher to know that this is not a plug and play product for your 40MM launcher.

Otherwise this product is well machined, well priced and shipped fast. Would have been a 5/5 if it worked in my m203 out of the box.