GrabaGun has the Smith and Wesson M&P-15 Sport II , Black, .223 / 5.56 NATO, 16-inch, w/ 30Rd magazine for $533 delivered to FFL (no tax for most).
Price is $525 + $8 shipping (+ FFL fee: Usually $5-$30 + $10 background check)
This is not the stripped down Sport, but the Sport II.
One of the best deals on a full mil-spec AR, no worries adding furniture / interchanging parts.
Limited quantities so buy it if you want it.
FP… if it weren’t a gun.