Finally got around to painting and putting decals on my four year old Flight Systems MRK-1 Penetrator clone. Airframe, motor mount, nose cone and launch lug were supplied by Semroc. Plywood fins were supplied by me. The decals were obtained from Excelsior rocketry.
Thanks! Semroc also has an xKit of the Penetrator that is complete with decals. An xKit (expert kit) is somewhat analogous to a parts pack. All of the components but with minimal instructions. The builder uses the original kit's instructions, which can be found here, for information on how to build the rocket.
I built this clone back in 2007, about 4-6 months prior to Semroc's release of the Penetrator xKit.