Yes, the feed lips are in the same location. A better picture here : google.com/search?q=GSG+Ruger+10/22+.22+LR+Drum+Magazine,&source=lnms&tbm=isch&sa=X&ved=0ahUKEwiQwOvkzJDcAhVKWq0KHf9UCicQ_AUIDCgD&biw=1280&bih=618#imgrc=hp7QWQrXo6f-tM:

Hi Christiian, Yes it will fit all models of the 10/22. The feed lips are in the same location. A better picture here : google.com/search?q=GSG+Ruger+10/22+.22+LR+Drum+Magazine,&source=lnms&tbm=isch&sa=X&ved=0ahUKEwiQwOvkzJDcAhVKWq0KHf9UCicQ_AUIDCgD&biw=1280&bih=618#imgrc=hp7QWQrXo6f-tM: SPECS -- Caliber: .22 Long Rifle Capacity: 110 Rounds Body: Hardened Polymer Spring: -- Higher Tensile Steel Follower: -- Black Polymer -- Built-In Loading Lever -- Finish: Black -- >>>>>>Fits: Ruger Models: 10/22 77/22 96/ 22 Charger Pistol American Rimfire Rifle

Yes it fits all models of the 10/22 Shoot a few boxes worth of ammunition at a time with the .22 LR Drum Magazine.
This Ruger rifle drum magazine from German Sport Guns functions reliably with all types of .22 Long Rifle ammunition. The 10/22 drum magazine features a whopping 110-round capacity for shooters who would rather be plinking than reloading every few minutes. When you must eventually reload, do it efficiently with the built-in loading lever.
GSG has a long reputation for producing quality items at a reasonable price. Since its founding in 2002, GSG has distinguished itself with its entrepreneurial courage and the highest quality standards. Working with 3D CAD / CAM technology in the fields of design and prototyping, GSG is able to achieve the highest degree of innovation and product improvement.
GSG Ruger 10/22 Drum Magazine Features and Specifications:
Caliber: .22 Long Rifle
Capacity: 110 Rounds
Body: Hardened Polymer
Spring: Higher Tensile Steel
Follower: Black Polymer
Built-In Loading Lever
Finish: Black
Fits:
Ruger Models:
10/22
77/22
96/ 22
Charger Pistol
American Rimfire Rifle

Yes it fits all models of the 10/22