Adl has blued steel, alum, or plastic trigger guard only. Front action screw uses an estrucion ( not sure if this is spelled right but itsa steel insert that sets into the wood or poly stock)
Bdl has bottom metal (drop plate) incorporated in with trigger guard
I have a McMillian stock I bought. It's for adl.just need trigger gaurd and screws. I also bought a wyatts extended box that I was going to have McMillian cut out for me. But wanting to use barnes new bore rider bullets it would be to short for them as they would be over 4 inches long. The stock is cut for a mag box would just have to fill in. Or keep it and install box and still use as single shot