I have both a Scorpion and a Stribog (along with a MP5 clone and APC 9 Pro). IMHO the Stribog is better out of the box. Scorpion has a horrible trigger and pistol grip. There's a reason why there are so many upgrades for the Scorpion. The only upgrade I've installed on the Stribog is the HB Industries non-reciprocating charging hand mod.
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