User blog comment:XXxCR7SISxXx/ATLAS CHIMERA/@comment-1729807-20100516072536

Anarchies cannot shoot twisted rounds (barrel3_Twisted) because Anarchies can only spawn with barrel1 or barrel2.

Also, there is no "Viper" style body grip and barrel. The Viper title is unlocked for spawn when WeaponSpread <0.8, and has no specific part requirements or part outcomes.