W L Johnson
Member
The first AR was the AR10B. I believe the actual "A" blew up during the SA trials, but that one still had the upside down trigger. The AR10 came later. The 10B is still in active service in Africa.
The AR-10B (note the B) is the modern reproduction of the original AR-10. It's even got the the Pegasus Logo instead of the lion.
here a link
http://www.armalite.com/ItemForm.aspx?item=10B&Category=f4bd4a13-55d1-41aa-aea0-49488ec48776