I've made a lot of wood and lego sets. Some are many times harder than this one. I assembled this gun in 1 1/2 hours. I first tried another pistol from another company that uses an internal rubber band, but I had to return it because it didn't work. This set consists of 4 moving parts and 3 metal springs. There are many spare parts. It would be nice if the pistol was self-cocking. You must pull back the trigger for each of the 6 shots. It worked perfectly without interfering with shots. I'm the eldest, I love kits and I end up giving the finished models to my grandnephew who is 8 years old.
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