I have an HS Precision Pre Series Sporter Stock up for sale. Just the little bit of research I've done looking at a few, many of the "Alaskan" and "Mountain" style stocks are a sporter design and have sporter/magnum barrel channels. Mine is for a #4 barrel profile or smaller. I only had a barreled action in it for a couple months and barely used it. My other rifle won't work in this stock. Shoot me a text if you have some interest (517)294-0362.