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M4 Shell Adapter [STL]

M4 Shell Adapter [STL]

€4,99 EUR
€8,00 EUR €4,99 EUR
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M4 Shell Adapter - STL

M4 Shell Adapter

Minimal kit, proper DMR feel

Lightweight shells that hold 30 BBs each for a true low-capacity DMR experience or minimalist loadouts. Compact, low-mass and tuned so you won't notice them in your pouches.

Design Philosophy

Why this one? Reliable BB retention.

A sliding mechanical retention pin holds most BBs in place during reloads so only two drop free — far more consistent and durable than O-rings that creep or fail.

Hardware & Parts List

Buy these locally:

BB Retention Pin
Ø2mm × 22–24mm
Latch Pin
Ø1mm × 10–12mm (or ~1mm wire)
Latch Screw
M2.5 × 16mm
BB Tube Screw
M2 × 5mm
Springs (2x)
Ø4.5mm × 15mm
Printing Notes & Tolerances

Tested settings:

  • • Layer height: 0.2mm
  • • Infill: 20%
  • • Material: PETG or PLA+ (both work fine)
  • • Tolerance: Tighten on fit parts (±0.1mm)

Important: Scale tolerances if your printer over/under-extrudes. This design requires precision on fit surfaces — test-fit before final assembly.

Community & Support

Need help or build advice?

🔗 Quizcen Airsoft Discord
Digital Delivery: After payment is confirmed, your STL file will be delivered automatically (usually 2–5 minutes). You'll receive an email with a download link.

📄 License: You may 3D print this model for personal use and share photos of your prints online. You may not use it commercially, modify or adapt it, or share, sell, donate, or exchange the digital files or printed models. Please respect this.

Version 1.0 — 20/07/2025

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