• Purpose: Holds spring/follower down while loading BBs into M9 gas pistol magazine.
• Fit: Sized for Beretta M9 airsoft gas pistol clips.
• Material: PETG or ASA recommended; PLA acceptable for test prints.
• Print quality: Print at low layer height for stronger layer adhesion and a snug fit.
• No supports: Designed to print without supports.

Print settings (recommended)

• Material: PETG or ASA (use PLA for prototypes).
• Layer height: 0.12–0.16 mm for best strength and surface finish.
• Infill: 25–40% (grid or gyroid).
• Perimeters / Walls: 3 perimeters.
• Top/Bottom layers: 6–8.
• Print speed: 30–50 mm/s.
• Bed temp: PETG 70–80°C; ASA 90–110°C; PLA 50–70°C.
• Nozzle temp: PETG 230–250°C; ASA 240–260°C; PLA 200–215°C.
• Adhesion: Use brim for small footprint if needed.
• Supports: None expected; rotate so flat face contacts the bed for best accuracy.

Usage

• Slide the block into the magazine side hole so it presses the follower to the lowest position.
• Load BBs into the clip while the spring is retained.
• Remove the block before inserting the magazine into the pistol.

Safety and legal

• For airsoft use only. Do not modify or use on real firearms.
• Ensure the device does not damage the magazine, spring, or BBs during use.
• Use common-sense safety practices when handling airsoft magazines and pistols.

Files and printing tips

• Exported STL is scaled to fit stock Beretta M9 airsoft gas magazines without modification.
• Verify dimensions against your magazine before final prints; airsoft parts have small tolerances.
• If you want a tighter fit, scale the part by +1–2% on the critical axis and reprint a test.