FDL-2 Short Stack

This is the caliburn katana magwell mushed together with the FDL-2 magwell until I had something working.

https://gfycat.com/AlienatedUniformIvorybackedwoodswallow
https://gfycat.com/DependentVillainousFruitbat

This is an early release, and currently has the following issues/requirements
- Has a bit awkward mag release
- Doesn't yet have covers for the race way
- Requires manually widening the holes for the magrelease. I used 1/8 and 9/64 bit for the magwell mag release holes, and the