Rock Island Armory RIA-MAG 9 Round for Rock Island Imports VR60 and Bull Rocket. RIA imports VR Series 9 round magazine is constructed with a Steel magazine body for durability along with a chrome silicon magazine spring, other features include a polymer anti-tilt follower and base plate. This magazine will fit the VR-60, VR-60 plus, VR-80 along with the Bull Rocket bullpup shotgun. Interchangeable with other RIA VR Shotgun Series