From Carlson's, The Mossberg 590 12 Gauge Ported Shotgun Barrel! This barrel fits all Mossberg Model Shock Wave Shotguns! 14" Barrel with Magnaporting features 22 port holes for added recoil reduction and muzzle jump Fiber Optic Hi Viz Green Front Sight Cylinder bore choke Manufactured by Mossberg Matte Black Finish Mfg: Carlsons
