Presma Aluminum Receiver End Plate w/ 1in Sling Adapter for .223/5.56/.308 Buffer Tubes Red. 223/5.56/.308 Buffer Tubes. Hole for QR Sling Swivel (sling swivel not included). High Quality 7075-T6 Aluminum Construction Specifications for Presma AR Buffer Tube Receiver End Plate w/ Sling Adapter: Manufacturer: Presma Finish: Anodized Fabric/Material: 7075-T6 Aluminum Hand: Ambidextrous Gun Make: AR Platform Gun Model: AR-10 AR-15 Condition: New Package Contents: Presma AR Buffer Tube Receiver End Plate w/ Sling Adapter What firearm models does the manufacturer say Presma AR Buffer Tube Receiver End Plate w/ Sling Adapter is compatible with? The manufacturer suggests that Presma AR Buffer Tube Receiver End Plate w/ Sling Adapter is compatible with AR-15 AR-10Presma ABTA10-R: Aluminum Receiver End Plate w/ 1in Sling Adapter for .223/5.56/.308 Buffer Tubes Red