This shows the basics how a sidwinder missile works.
https://www.youtube.com/watch?v=dr6vUL2ThDQ&feature=player_embedded
https://www.youtube.com/watch?v=dr6vUL2ThDQ&feature=player_embedded
The only problem with a drill 9 missiles is that they sometimes use live seeker heads with gas grain generators fitted, but fitted with a drill umbilical (blue plastic coated securing band) the firing pins and wires are removed (not present). But as you said, if all the paperwork is in order, this should not pose any problems.
Mind you its still a heavy item to have - three man lift - not using the wings!!!!!!!!!!