I had to get one drilled and tapped on the barrel on my guide take down. I cant remember if they used a 1895 base or used maybe a Thompson encore. I do not think they make what you are asking for and it might be a drill and tap job. You might be able to get a long base out front and able to make a scout mount scope but this might add a lot of torque on the base screws if not mounted with the right dimensions.(like a truck camper mounted to far back, just the opposite here)