Steel Magazine Follower MODELS: SMF870 | SMF500 Sage Steel Magazine Followers are available for 12 gauge Remington 870/1100/11-87 and Mossberg 500 shotguns. They are machined from ordnance grade steel and feature a durable black nitride finish. The design allows you to quickly recognize an empty magazine tube. Can only be used with magazine tubes that do not require slots on the followers. CNC Machined from ordnance grade steel Black Nitride Finish Drop-In, No modifications required Made in the U.S.A.