As far as I know, it fits in a regular 3/8" dovetail. You might call Lyman @ 1-800-22-lyman, (I think that's their number). You know, I just now thought of it, but if you have a ramp at the muzzle into which there's milled a dovetail, as most '94's do, instead of just the dovetail milled directly into the barrel, you may want to re-think that globe because of how it may look. Of course it may be possible to remove the ramp, too, & just mill a dovetail into the barrel to make it look right. JD45