If you are getting a stock made for the BDL, all you need do is order a BDL floor plate and a BDL magazine box. Floor plate $82.00, Magazine Box $10.00 plus shipping from Midway. If you are fairly good with tools, you can cut the ADL magazine box to fit. Just finished the very same conversion. Nothing to it. Or if you want a detachable box, you can get one from Cabela's for around $90.00. That includes the new floor plate. It comes with a 4 round magazine. They also have a 10 round option.