No, it uses an 18mm ST-7 motor tube, with centering rings holding it in an ST-9. The body is ST-10. The ST-9 is a slip fit into the ST-10 and fin tabs glue to it.

__________________
Lee Reep
NAR 55948

Projects: Semroc Saturn 1B, Ken Foss Designs Mini Satellite Interceptor
In the Paint Shop: Nothing! Too cold!
Launch-Ready: Farside-X, Maxi Honest John, Super Scamp