Originally Posted by
Rayrevolver
Great discussion.
I am kicking myself for selling that Vltor "FOG" upper and never shooting it. That was the 10" barrel with a gas trap type system that required an expansion chamber.
With respect to the SF system, why wouldn't they have messed with the cam track? Does anyone know or have hands on one of these things?
Ray, if you analyze the pictures, the cam track is different. This is observable due to the extractor pin being further forward and extending past the front ledge of the carrier. This permits longer travel of the bolt.
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"That thing looks about as enjoyable as a bowl of exploding dicks." - Magic_Salad0892
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