In Mass Effect 2 and Mass Effect 3, Rosenkov Materials manufactures one small arms weapon: * M-97 Viper Sniper Rifle File:ME2 SR - Viper.png Rapid-fire military sniper rifle. Incredibly accurate and deadly at long range, these weapons are popular amongst infiltrators and assassins. Very effective against armor, somewhat effective against shields and biotic barriers. Upgrades the Mantis sniper rifle. Rosenkov Materials developed this deadly weapon in response to the rising prevalence of kinetic barriers. While kinetic barriers still offer some protection from this weapon, its sheer power and rapid rate of fire make it capable of quickly killing almost any target, regardless of its defenses.