JGCWORKER Automatic Kits 130 Motor Semi Auto and Full Auto Modified Parts Set for Nerf N-Strike Elite Stryfe ToyNOTE: Please notice this kits need some installation skills, so it is generally not suitable for people under 14 years of age. All the parts are separate and you need to reassemble them. Package included: 1 x Trigger 1 x Push rod 4 x Micro switch 1 x Adjustable power step down module 1 x Automatic speed box 1 x Wire package 1 x Speed box fixed 1 x Micro switch fixed 2 x 25PB screw 8 x 2. 6 * 16PB screw 3 x 2. 6 * 10KA screw 1 x Tension spring 1 x