You will need ADL Magazine box,Spring,Follower,Trigger guard ,Rem ADL screw kit ( stanard length or extra long) I get the extra long cut to length that Brownells sells. I've done the conversion BDL to ADL also ADL to BDL with other stocks not sure B&C even makes that stock anymore you might want to call Stocky's. Well good luck
It's easy to make the change only thing is make sure the guard screw are right length I've always got a new follower that way if I want I can sell the BDL as complete.