First one I have ever seen and I don't know a lot about it, but I have done quite a bit of research on it and have asked a lot of questions so I will try to explain this with as much knowledge as I have to date, and will try to price it to sell.
As far as I can figure out it is a kit to convert Supermatic and Field King 22 cal pistols from 22lr to 22 short using a Olympic heavy target barrel. This kit comes with the 6 3/4" Olympic barrel, a lightweight slide for 22 shorts with adjustable sight, two barrel weights, and a 22 short magazine. I think the pics will explain what I have better than my words. This kit comes with the original box which has seen better days, but appears to be unused/unfired! I think this conversion is the model 9151 on the end flap, but I won't say for sure. According to some of my research I have seen these kits sell for around $400.00. I am going to ask $400.00 shipped, but I will listen to offers and I can take more pics etc. if needed to send to your e-mail address.

Thanks for looking,
Ken

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