Phase 5 Weapon Systems Low Drag, High Visibility Magazine Follower, Red, Made From Precision Machined 7075-T6 Aluminum, Fits Benelli M2 & M4, Mossberg 930 & 500, Remington 1100, 870 & 11-87, Stoeger M3000, KelTec KSG (Fits Most Factory 12 Gauge Shotguns Magazine Tubes and Extensions Without Spring Follower Retention Dimples) 12GSF-RED The Phase 5 Low Drag" High Visibility 12 Gauge Shotgun Follower (12GSF) is designed to feed smoothly with no binding in most factory 12-gauge magazine and extension tubes. The 12GSF is precision machined from solid 7075-T6 aluminum bar-stock in the U.S.A. and comes with bright white lettering and a center hole to help verify that the magazine tube is clear by sight and touch.