Hipster M1k is the ideal primary to use with a Cryo scout build, having both the burst damage and the crowd controlling capabilities to delete frozen targets, both large and small. Precision Terror is an invaluable upgrade for a Hipster M1K, as weakpoint kills to Glyphid Grunts, Slashers, Acid Spitters, and Mactera Spawn can instill fear into large crowds of enemies. A Cryo Minelet Zhukov is a very strong alternative for the secondary slot, but I personally find them harder to use compared to Cryo Bolts.