Atlas Bipods: What models are what?

In this video, Rusty covers (most) of the models of the B&T Atlas Bipods. The only model missing (at the time of filming) is the BT69, which is the same as the BT65, but with longer legs in the CAL2 series. Atlas have also released the Super Cal product line also.
Thanks to Scoped Out for supporting this video:
www.scopedout.com.au
Rusty has a vested interest in Scoped Out through part ownership.