9mm Single Snap Cap Pocket Case & Maintenance Tool (Screw-Top)

A compact, screw-top storage container for one 9x19mm snap cap and its spare parts.
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updated January 3, 2026

Description

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This is a portable "maintenance kit" for your 9mm training gear. It is designed to house a single 9x19mm snap cap and all the small consumables needed to keep it in working order.

Features

  • Secure Screw-Top: The threaded lid ensures the case stays closed and your small parts stay safe in your pocket.

  • All-in-One Storage: Holds one snap cap plus a supply of spare O-rings and reversible printable primers.

  • Custom Maintenance Tool: Includes a printable handle designed to hold a specific nail size to act as a primer punch.

LINK TO VIDEO

The Primer Remover Tool

To easily swap or flip your reversible primers, this kit includes a printable handle for a DIY punch tool.

Required Hardware:

  • Nail Diameter: 2.2mm

  • Nail Length: 45mm

Assembly:

  1. Print the handle.

  2. Insert the 2.2mm x 45mm nail into the handle.

  3. If the fit is loose, use a small drop of superglue to secure the nail permanently.

  4. Use the tip of the nail to push the primer out through the through-hole in the snap cap.

Print Settings

  • Material: PLA+, ABS, or PETG. O-ring print with TPU is also primer (but it's not mandatory).

  • Infill: 15-20% for the case; 100% (Solid) for the tool handle, or increase wall settings to 4.

  • Layer Height: 0.12mm is recommended. The lower layer height ensures the screw threads are smooth and easy to open.

  • Supports: None required. Print both parts of the case with the openings facing up.

⚠ Safety Warning

  • Stay Organized: Print the case in a bright, high-visibility color to ensure it is never confused with live ammunition storage.

  • Clear Your Firearm: Always double-check that your firearm is unloaded and no live ammunition is present before beginning dry fire drills.

☕ Support My Work

If this organizer helps keep your training gear tidy, consider buying me a coffee!

https://ko-fi.com

Thank you so much for the coffee! I truly appreciate your wonderful support. Happy printing!

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Model origin

The author marked this model as their own original creation.

License