9×19mm Parabellum Cartridge

The 9×19mm Parabellum (also known as 9mm Parabellum or 9mm Luger or simply 9mm) is a rimless, tapered firearms cartridge. Originally designed by Austrian firearm designer Georg Luger in 1901, it is widely considered the most popular handgun and submachine gun cartridge due to its low cost and extensive availability.

Since the cartridge was designed for the Luger semi-automatic pistol, it has been given the designation of 9mm Luger by the Sporting Arms and Ammunition Manufacturers' Institute (SAAMI) and the Commission internationale permanente pour l'épreuve des armes à feu portatives (CIP).

A 2007 US survey concluded that "about 60 percent of the firearms in use by police are 9mm [Parabellum]" and credited 9×19mm Parabellum pistol sales with making semiautomatic pistols more popular than revolvers.

Printing Tips

Print with random seam positioning (Prusa Slicer > Print Settings > Layers and perimeters > Advanced > Seam position > Random).

Model Format

The model is available in .STL .STEP and Fusion360 (.F3D) format. 

• STL and STEP files can be used in your typical Slicer Software like PrusaSlicer
• The F3D format contains the original sketch for easy customization in Fusion360

Use as Dummy Round / Snap Cap

3D printed models based on CIP cartridge dimensions are not ideal to fit or be used in real guns. Printed with non-elastic filaments like PETG or PLA, the cartridge is going to break if hit by the bolt. To create usable Snap Caps, I made the modified version (-MOD). 

The -MOD file is a modified version with the following changes:

• Modifications for better printability
• Slightly smaller dimensions to fit into real guns
• Primer Pocket (Print SP.stl using flexible Filament like FilaFlexible40 as a primer. If you don't have a reloading press, you might want to scale it down to 96%)
• Drill Hole (7/64 or 3mm) inside the Primer Pocket. The Drill hole is intended to be fixed on a drill to sand and polish the model, creating a nice looking shiny finish.