Dryfire "Moonclip" snapcap holder for S&W 617 22LR revolver practice shooting.
Uses #4 drywall anchors from the hardware store, which snap into place. Makes it easy to insert and remove all anchors at once.
Sliced with Cura, Printed Ender 3, 0.2 layer height, 0.4 nozzle.
Not much too it.
The author hasn't provided the model origin yet.