Fully Functional Model Rocket V2 (UNFINISHED)

This is a work in progress, but the goal of these parts are to interchange the airframe of my v1 rocket with this, and the other part(requires glue) so that a string can be attached on the inside to the nosecone, so that when the ejection charge blows it will pull up, the outside will have a rubber band that will get pulled up letting 4 landing pieces fall downward and lock into place, allowing the rocket to land itself(still need to work on landing pieces)Boost Me