AT3 Tactical AR15 Forward Assist Assembly. Specifications for AT3 Tactical AR-15 Forward Assist Assembly: Manufacturer: AT3 Tactical Gun Model: M16 AR-15 Gun Make: AR Platform Features of AT3 Tactical AR-15 Forward Assist Assembly Mil-Spec forward assist assembly. Made for AR-15/M16 Package Contents: AT3 Tactical AR-15 Forward Assist Assembly Forward Assist Assembly Forward Assist Spring Forward Assist Roll Pin What firearm models does the manufacturer say AT3 Tactical AR-15 Forward Assist Assembly is compatible with? The manufacturer suggests that AT3 Tactical AR-15 Forward Assist Assembly is compatible with AR-15 M16AT3 Tactical AT3-FAA-01: AR15 Forward Assist Assembly