WMD Guns Upper Assembly Billet AR-15 MLOK HG 12in NiB-X Nickel. Specifications for WMD Guns AR-15 Billet Upper Assembly w/ M-LOK Handguard: Manufacturer: WMD Guns Handguard Type: Free-Float Muzzle Device: No Finish: NiB-X Color: Nickel Gun Make: AR Platform Gun Model: AR-15 Magazine Included: No Features of WMD Guns AR-15 Billet Upper Assembly w/ M-LOK Handguard Drops onto any Mil Spec lower receiver for ultimate reliability Package Contents: WMD Guns AR-15 Billet Upper Assembly w/ M-LOK Handguard What firearm models does the manufacturer say WMD Guns AR-15 Billet Upper Assembly w/ M-LOK Handguard is compatible with? The manufacturer suggests that WMD Guns AR-15 Billet Upper Assembly w/ M-LOK Handguard is compatible with AR-15WMD Guns 1-NIBXUAMLOK12: Upper Assembly Billet AR-15 MLOK HG 12in NiB-X Nickel