7.62x39 Snap Cap: FFFTech/FFFTechnology 3D printed snap cap, dimensions of a 7.62x39 cartridge. Printer Used: Ender 3 V2 Filament Used: PLA+ Print Settings: Extruder: 218C Bed: 56C First Layer Print Height: .18mm Standard Layer Height: .1mm - .12mm Wall Thickness: .40 Wall Perimeters: 5+ Infill: 32%+ Infill Pattern: Gyroid Material Flow: 100% (Highly advisable to print 3+ copies on a single build plate) Depending on your machine's settings, you might need to scale +/- .01% for best fit of snap caps into the chamber.