its VSBR if im nt wrong.
variable speed beam rifle, those 2 rifles on the back of F91.
duotiga refering to the ball joints that're brittle.
i almost broke mine when i turn it with too much force...
edited: ive also gotten a action base 1 white colored, but fits on
qubeley instead. will post pics when i have time... which
is......ok i dont have time. 
