Atsuko Scorpius Scale

Overview

This model is meticulously crafted, drawing inspiration from both Azusa's signature weapon, Scorpius, in Blue Archive and the real-world CZ-UB Scorpion EVO3-A1. A 1:1 recreation featuring over 40 individual parts, this model boasts realistic functionality including shell ejection (for optimal results with the purple egg model, please utilize the Parabellum 9x19mm pistol round model I've previously shared), magazine loading, empty chamber detection, bolt manipulation, a foldable and detachable stock, and quick-release mechanisms. However, please note that the trigger is non-functional, empty chamber detection release is not implemented, the safety selector serves solely as an aesthetic detail, and crucially, it is incapable of firing, only capable of ejecting shells, and strictly intended for cosplay, display, or casual handling

The STEP file is publicly available for educational purposes or reference

Preparation

Nitrile gloves*1, hobby knife*1, cyanoacrylate adhesive (502 or ideally 416)*1, sprue cutter*1, fine-tipped tweezers*1, 60-grit sandpaper*1

Decals (custom-ordered online or model modification required)

Hook-and-loop fastener (Indigo, 20mm wide, 400mm long)

M4 screws (14mm long)

M4 screws (30mm long)

M4 screws (50mm long)

M4 nuts

Magazine catch spring (15mm long, 0.5mm wire diameter, 4mm outer diameter)

Slide compression spring (300mm long, 0.5mm wire diameter, 10mm outer diameter)

Magazine compression spring (rectangular, 170mm long, 27mm wide, 12mm high, 1mm wire diameter)

Design References

World of Guns Gun Disassembly for structural reference

Newsfeed - Sketchfab  STL files

Blue Archive art book illustrations

Relevant Bilibili videos

Modeling Design Diagrams

Assembly & Functional Demonstration

Uploaded to Bilibili