When my Dad's old favorite deer rifle went sour (old semi-auto Remington) I decided it was time for a change. I did a lot of research and decided to get him a BAR (he always preferred semi-autos for hunting). I looked into it a bit, found that there are (this was several years ago) several models out there.
Several of the "newer" models out there are offered with an "Aircraft-grade alloy" receiver and some (safari grade for example) are available with a steel receiver.
I used to know how to tell where certain models were made, but I don't remember any more. I believe at least some of them are stamped with their place of build.
What we ended up getting for him was an older model safari grade with some engraving and great overall condition. It has open sights with a scope mounted on it.
It really is a fantastic rifle. It has a good feel. It comes up quick. It has worked so far without failure. My Dad told me that the last time he shot some paper with it he shot a 3 shot group and all the shots were touching and in the center of the target (100 yds).
I can understand why someone would want one. Semi auto, good accuracy, good handling, and in 30'06 you can get ammo almost anywhere, hunt about anything in N America and still reach out a bit with it.