Gun chamber reaming machine

Video:
https://youtu.be/RHydihjWqdI
https://www.facebook.com/dickchoworkshop/

We generally thought that need a heave lathe to make gun chamber. This thing can make a gun chamber by relative simple and little lathe.
What you need:
1. Simple and little lathe. https://item.taobao.com/item.htm?spm=a1z09.2.0.0.206d2e8dcmjier&id=548733211558&_u=toakrssdb3d
2. Some bearings. https://item.taobao.com/item.htm?spm=a1z09.2.0.0.206d2e8dcmjier&id=580215854175&_u=toakrss0775
https://detail.tmall.com/item.htm?id=611796709407&spm=a1z09.2.0.0.206d2e8dcmjier&_u=toakrssdff4
3. Some screw and fixing nut. https://detail.tmall.com/item.htm?_u=toakrss905a&id=563137932227&spm=a1z09.2.0.0.206d2e8dcmjier
https://detail.tmall.com/item.htm?_u=toakrss8ffd&id=562161598507&spm=a1z09.2.0.0.206d2e8dcmjier
4. Some of bearings may not fit to the base aluminium profile. So you need to print the STL as attached.
5. Chamber reamer. https://item.taobao.com/item.htm?spm=a1z09.2.0.0.206d2e8dcmjier&id=587305539395