I've got an Enfield #1 Mk4 in .303 that I would like to update. Its fully functional and in good shape except for the stock which has seen better days. I've tried to find a replacement stock and, as far as I can tell, the only game in town is from Advanced Technologies Inc. Has anyone tried their products and if so would you recommend them? Are they indeed the only company that makes a replacement stock for this rifle? Any help would be welcome. Thanks.