Samson Manufacturing Corp. B-TM, Stock, Black, Folding Black Stock, Ruger 10/22 10-00037-03 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.