Product Name : Super Defender (3D Print Kit Gun) Manufacturer : Imura Works (Japan) Designer : Yoshitomo Imura Designed : 2019 Material : PLA / ABS / Nylon / Polycarbonate Caliber : .38 Shoot : 1 Barrel Type : Smooth Barrel or Lifering Barrel Barrel Length : 76.2mm (3inch) Lifering Barrel Groove or Corner Number : 10 Lifering Barrel Twist Direction : Right Lifering Barrel Twist Angle : 76.2mm (3inch) 36 M3~20 Cap Screw (Slide Locking Pin Head) 5~30 Pin (Trigger Pin) 5(Inner4.2)~15.75 Spring (Trigger) 8(Inner6.4)~75 Spring (Bolt) 12(Inner9)~18.75 Spring (Slide Locking Pin) 12(Inner10)~119.5 Pipe (Smooth Barrel) 20~40 Rod (Grip Inner Metal) Firing Pin (Metal 3D Printing) Lifering Barrel (Metal 3D Printing)