Aero Precision Receiver Extension End Plate Mil-spec Black. Specifications for Aero Precision AR-15 Receiver Extension End Plate: Manufacturer: Aero Precision Color: Black Gun Make: AR Platform Gun Model: AR-15 Included Accessories: Standard Condition: New Country of Origin: USA Package Contents: Aero Precision AR-15 Receiver Extension End Plate What firearm models does the manufacturer say Aero Precision AR-15 Receiver Extension End Plate is compatible with? The manufacturer suggests that Aero Precision AR-15 Receiver Extension End Plate is compatible with AR-15Aero Precision APRH100081C: Receiver Extension End Plate Mil-spec Black