I don't think any of the Sheridans have the slot cut into the reciever.Bryan
Longhunter please consider this though. The Dan is your rifle (I reckon) and is meant to please YOU and meet your needs. I'm supposing you plan to keep it. yes the "collector's value" may diminish with drilling and tapping, but right now, you have a rifle that YOU want to use and need. I went through an internal debate on some cartridge guns about modifications I wanted to make. I chose to make the tool fit MY needs. Just my thoughts. Don.