I'll go back and verify, but I almost certain it's 110E, I know chambered for .308. Several years ago, I purchased a long action stock for this gun and had to do some xtra work on the metal lathe to make it look descent because of the bolt spacing. I'll also see if I can learn to post a pic.
At this point, I can't tell if the mag will fit the cutout because of the width of the receiver vs the stock.