- last post: 01.01.0001 12:00 AM PDT
To be fair, the lack of a BR in the original Halo game doesn't mean it hadn't been invented back then. It just suggests that the marine units aboard the Autumn weren't equipped with them.
The same can be said for a ton of different weapons. Reach was the base of operations for the Office of Naval Intelligence, so presumably they had an R&D division there working on new weapons we might see that could've been destroyed along with Reach and thus didn't make it into Halos 1, 2 and 3.
[Edited on 10.20.2009 9:46 AM PDT]