Warning: Misuse may cause injury. Do not aim at people or animals. Adult supervision required for children. By downloading or printing this model, you accept all responsibility. The author is not liable for any damage or misuse.

Additional Hardware Required (Full BOM)

• 1× Spring 0.8 × 8 × 30 mm
• 1× Spring 0.5 × 6.5 × 150 mm
• 4× 624 Bearings (U-624 or V-624 optional)
• 2× M3 × 14 mm locating pins
• 4× M3 × 30 mm locating pins
• 4× M4 × 14 mm hex screws
• 2× M3 × 10 mm hex screws
• 2× M3 × 6 mm hex screws
• 1× M3 × 14 mm hex screw
• 4× M2.5 × 5 mm hex screws
• 2× M4 × 6 mm ball-head set screws
  

[https://www.amazon.com/Spring-Socket-Point-Screws-Stainless/dp/B074J69SZB?th=1](https://www.amazon.com/Spring-Socket-Point-Screws-Stainless/dp/B074J69SZB?th=1)

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  Steel balls (8 mm)