I have a brand new out of the box sig sauer m400x! It had the pistol fin on it but with the new guidance from the 9th you can make changes as you see fit! It's never had an optic on it never had a round through the barrel. These retail for $1500 new so I'm very firm on $1200 for it. I'm not taking trades at this time. If you have any questions reach out while I've never shot this gun I have shot the model it's fantastic and is completely ambidextrous with controls!