I bought this barrel for a project that didn’t pan out. It is new. I believe it has been discontinued also. Message for pics or more info.
Advanced Armament Co (AAC) Barrel Remington Model 7, 700 Medium Contour 300 AAC Blackout 1 in 7" Twist 16" Chrome Moly Matte 5/8"-24 Threaded Muzzle
$300 plus shipping