A stand for the Forge 3D Bullet Bill. There is a 0.1mm tolerance between the inner and outer so they should push together with a bit of force.
The Bullet Bill itself can be got from https://www.myminifactory.com/object/3d-print-bullet-bill-26743
bulletStandInner.stl | 325.8KB | |
bulletStandOuter.stl | 146.6KB |