从数组中删除Movieclip

I'm very new to ActionScript 3.0, so be gentle. :P I'm making a simple 'custom gun' program where you can cycle through the different parts of the weapon to give it a unique appearance. For example, you have the 'barrel' and the magazine'. Each part is a movieclip with frames for the different options.I'm very new to ActionScript 3.0, so be gentle.