Certificate Mockingbird Destroy 870 side saddle with rail mass Inaccurate law
Amazon.com : Monstrum Side Mounted 12 Gauge Shotgun Shell Holder with Picatinny Rail Mount for Drilled and Tapped Remington 870 Model Receivers : Sports & Outdoors
Amazon.com : TacStar Industries 1081035 Shotgun Rail Mount,Remington 870,1100 and 11-87, W/Sidesaddle, 6 , Black : Sports & Outdoors