What does bdl and adl mean in Remington model 700?

The designation, ADL or BDL refers to the stock on the 700 model rifles. The 700ADL has a plain walnut stock with a blind box magazine, no floorplate.

The Model 700 BDL is a bit fancier as far as the stock goes. This Model has a dropping floorplate and is most often found with a black plastic fore-end tip and grip cap.