Its weird, It looks like some kind of old military action will fit it but not sure what one. Its an unfinished stock thats supposed to be a bishop or Herters custom. But it definatly has a 7 3/4 space from center to center of the holes. And it has a cutout magazine like a BDL. The center of the rear bolt is 3" from the rear edge of the magazine cutout and the magazine cutout is tapered from 1" to 1 1/16" and its 3 5/8 long. The front bolt is larger than the rear and has an oval cutout area around it like something goes into it with the bolt.