RFB stands for Rifle, Forward-ejecting Bullpup. Why forward-ejecting?
Because it allows the RFB to be the first truly ambidextrous 7.62 NATO
Bullpup ever developed. The patented, dual-extractor system maintains
control of the case from the moment it leaves the magazine and upon firing,
pulls the fired case from the chamber and lifts them to push them into an
ejection chute above the barrel, where they exit. The Bullpup configuration
and tilting-block mechanism allow the 18" model to be only 26.1" long, or
as much as 14" shorter in overall length than its competitors with equal
barrel lengths. Furthermore, the stock and mechanism cross-section is
similar to a conventional rifle, in stark contrast to existing Bullpup
rifles. The RFB is also the safest Bullpup ever developed because the
breech is separated from the shooters face by two layers of 1.6 mm steel.
In the highly unlikely event of a case rupture, gas expansion is directed
downwards through the magazine well to protect the shooters head and face.