Additional in-letting is need to use the Remington BDL Bottom Metal ... And the barrel channel needs barely opened up to take the Proof Sendero CW barrel..I did get CA bottom metal follower and screws directly from CA once and they charged me over $250... If a person had a mill it would be easy to get a nice clean job... I opened them up wit a Dremel Tool and tried my hardest to do a nice clean job.... Fit and finish wasn't perfect for me when doing it..Still a very nice stock for the price..Dave