If you are interested in a laminated thumbhole stock, Stockys has the Apache stock that will have plenty of room to open up. I am in the process of rebarreling an ABolt with a #4 Bartlein to go in that stock. Their #4 will be slightly larger than the PacNor #5. I would be able to squeeze it into the factory factory stock if I wanted and I bet the Bell and Carlson should work as well.