He's an idiot, he did the same thing to some other guys ad yesterday calling him a scammer. Even a mod called him out it. Better just to avoid dealing with that low balling ass.
I don't know what you're looking at but it does not say Gen 2, it doesn't say anything at all since Gen 2 didn't exist yet. Gen 1 weights 2lb 7.6oz, it's 5.6oz lighter than a Gen 2 with a longer forend and 2 extra Mlok slots.