Mossberg 500 / 590 / Maverick 88 Shotgun Stock Kit 12ga Only Waterfowler Camo Fits: Mossberg 500, 500A, 590 and Maverick 88 12 Gauge Only Mossbergs current production model which utilizes a design where the action bars are integrated into the forarm. Ideal for replacing damaged or old standard stocks. Factory Stock: not aftermarket or import. Includes: 1 Stock with Recoil Pad and Mounting Hardware and 1 Forarm with Action Bars.