RE: WHATS A BDL?
Along with what the others have said, "origionally" all BDL's came with a Rem. sling in the box, ADL's didn't. Many dealers would take the sling out, and sell it seperately. Another trick was to tell the customer they would "throw it in" to make you a better deal!
Also the "only" ADL's and BDL's that didn't have iron sights were the Varmiters and target models...
Don't know what's happening these days...
Drilling Man