Samson Manufacturing Corp. B-TM, Folding Stock, Fits Ruger 10/22 with Bull Barrel, Stainless Steel Finish, Walnut Forend 10-00046-00 The Samson B-TM Folding Stock for the Ruger 10/22 maintains the same classic look as its bigger brother" the A-TM Folding Stock for the Mini-14. It is a drop-in replacement stock" with walnut and stainless steel construction.