So im makeing a arm prop from final fantasy advent children. The name of the prop is called Hound. Iv'e started to make it with some pvc pipe.My problem is that i want it to pop out like it dose in the movie.I was hopeing some one can help me with like a spring switch.I was hopeing to put the botton for the release switch to be on the handle.Im really not good at makeing stuff wok like this.If there is a turotal some ware a link would be cool.Or any idea's would be helpful.Here are some reference picture's of the Hound.