Choate Tool Rem. 9 Shot Lw Ext.. This extension from the experts at Choate Tool adds a further 9 shells to your shotgun's capacity. The Choate Tool Remington 9 Shot Extension is perfect for a duck hunter who needs to bring home a limit or anyone who needs to make sure they have all the ammo they'll need for their hunt. This extension is easy to install and use - just be aware that it adds minimal swing weight. The steel construction of the Choate Tool 9 Shot Remington Lightweight Extension means that it is reliable and durable as well. Find out more about all the other great Choate Tool products compatible with the Remington 870/1100/1187 shotgun on our Shotgun Accessories page. Specifications for Choate Tool Remington 9 Shot Lightweight Extension: Manufacturer: Choate Tool Magazine Capacity: 9 Round Gun Model: Remington Model 1100 Remington Model 870 Condition: New Country of Origin: USA Features of: Adds +4 shotshells Machined from steel Package Contents: Choate Tool Remington 9 Shot Lightweight Extension Spring Follower Clamp What firearm models does the manufacturer say Choate Tool Remington 9 Shot Lightweight Extension is compatible with? The manufacturer says that Choate Tool Remington 9 Shot Lightweight Extension is compatible with Remington Model 870 Remington Model 1100Choate Tool CMT-01-04-34: Rem. 9 Shot Lw Ext.