AIM Sports Tactical Quad Rail with Side Shell Carrier for Remington 870/1100 Shotguns

The AIM Sports Tactical Quad Rail with Side Shell Carrier is a full length quad rail with a huge 21" rail on top and smaller rails on the sides and bottom, with a side saddle shell holder with room for 6 rounds of 2 3/4" -3" shotshells. This Tactical Quad Rail with Shell Carrier is compatible with Remington 870 only if it has a minimum 16" barrel and the extended tube on the bottom & Remington 1100.