Prayers for a speedy recovery. Not saying he wasn't wearing one, but WEAR A HARNESS, especially in a climber. I went many years without one, but after a close call, don't climb without one now.
I have one for a pre 64. I used the last one for a post 64 on a repair a month or so ago and haven't ordered another one. This last one came in missing the pin retaining screw, and he wanted the mount added. I happened to have the longer screw for the mount, so didn't need it for this rifle.
Yes, they are an offset mount due to the top eject of the 94. Utilizes the finger lever pin retention screw hole, and one of the smaller holes on the rear of the receiver. I have an older one in the shop that was just installed.