FGC-9 MKII Enhanced Bolt features a bufferless recoil system, along with an integrated extractor and ejector.
When preparing the enhanced bolt housing or upper receiver files in a slicer like Cura, builders adhere to standard, heavy-duty defensive print specifications.
- Filament Type: PLA+ or Pro PLA (standard PLA is too brittle).
- Infill Density: 99% to 100%.
- Layer Height: 0.16mm for maximum interlocking strength.
- Wall Line Count: 8+ walls (or maximum perimeter settings).
- Orientation: Print flat as oriented in the STL file package to maintain structural shear strength.
- The Enhanced Bolt package replaces these components with a drop-in, commercially manufactured metal core. The file description details exactly how the printed upper architecture adapts to this change.
