My brother bought a Model 11 Trophu Hunter package without an accutrigger. I found a model 12 accutrigger for a good price and have been trying to get the new trigger on the rifle and it doesn't look like it will work. Has anyone tried to put an accutrigger on one of these riffles?

(I'm sure this has been discussed before but I'm working on it right now and on my phone so didn't use the search function)