That's a good deal. They probably had to come down some because of the Remington Tac-14 $50 rebate.
I'm tempted but I would rather wait for a 20 gauge.
I am on a waiting list for the Remington 20 ga version. Per a review I read, it has a smaller receiver than the 12 ga model.
I saw on Slickguns where Brownells has the Mossberg Shockwave on sale for $329 shipped with coupon code MDH
I don’t think anybody is actually selling the 20 gauge yet. At least I haven’t seen it.