Forum:Can I get the M99 Saber if I missed it in Sanctuary?

Hi Guys, I missed picking up the M99 Saber in the Priority:Horizon mission (I rushed through the variety of scary labs and missed it) and was wondering if there was a place (like Spectre Requisitions) where I could buy it, as I kinda want to use it for the assault on Earth (which I am on now). Any help would be much appreciated, Sanjay