I'm late for the party on this one, but the MK ejector I bought for my old model Rug Vac I got from Brownells probably a dozen years ago works good. As CM advised it did need a bit of fitting, but nothing real intensive. I changed it not so much that it wasn't the dreaded 'not period correct', but the original had to small of a head.. I went with the crescent as I didn't care for the looks of the larger bullseye. It looked to large, out of place.