I sure like the snakey rollmark.. $640..
https://www.tombstonetactical.com/catalog/bushmaster/e2s-m4a3-rifle-223-rem-16in-black/
That link is confusing. At the top it lists it as 5.56 NATO, then in the description it lists it as .223. Not only that but it has the A2 birdcage permanently attached which limits any upgrades to the gas block, comp/brake/flash suppressor, etc without changing out the whole barrel. I could understand if the barrel was just shy of 16" but they listed the barrel as 16" so no need to pin/weld the birdcage.