Manticore Arms AUG Enhanced Port Cover Black. The AUG Enhanced Port Cover will work on both the left and right sides of the Steyr AUG and includes all hardware and tools needed for installation. Specifications for Manticore Arms AUG Enhanced Port Cover: Manufacturer: Manticore Arms Gun Type: Rifle Gun Make: Steyr Gun Model: Steyr AUG Fabric/Material: Aluminum Color: Black Length: 8 in Width: 1.5 in Height: 0.125 in Weight: 5 lb Features of Manticore Arms AUG Enhanced Port Cover Seals unused ejection port from gas and powder release and locks in place more securely than OEM port cover Package Contents: Manticore Arms AUG Enhanced Port Cover (1) Outer Port Cover (1) Inner Port Cover (2) 8-32 x 3/8in flat head screws (1) 3/32 allen wrench What firearm models does the manufacturer say Manticore Arms AUG Enhanced Port Cover is compatible with? The manufacturer says that Manticore Arms AUG Enhanced Port Cover is compatible with Steyr AUGManticore Arms MA-38300: AUG Enhanced Port Cover Black