Thanks feenix.
I went to the website. if you look close, their are 2 configurations of the Nitro. The F1 which is FFP and the F2 which is SFP. The First focal plane is about 100 dollars more.
Not all the info about it seems correct though. Being a 30 mm tube it's a little chunky in the 20X, 44mm at 24 oz if that's a problem.
Looks like they have 3 models, the basic "Prime", the more feature rich and expensive "Nitro" and that top of that line "Forge". They all offer sub models based on the magnification and the reticle and focal plane you desire.