Ask for pics of the top rail. Gen 1 Ace had lightning cuts in the rail. It is not a ridgit if you put heavy optics, according to gun review rags. I have both solid Gen 2 and lighter Gen1. Both were plenty rigid for me. But you can use it to negotiate the price down, if it is Gen 1.with brace and says factory new condition w/ free shipping (to an ffl so imma have to add another 20 for their fee)
Also Gen 1 comes in all cardboard box, Gen 2 comes in the cardbox with the foam insert.
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