I've got an early 70s BDL model. The sights on it are the bigger ones, look similar to Remington's centerfire sights. I agree they don't look as good as the smaller ones but they work a lot better for my older eyes. My 552 with the old style stock with more drop in it, longer barrel and bigger sights is the only rifle I own that I can use the open sights on. It looks like it would be hard to use the open sights on the newer ones with the high comb stock.
