Tiger Rock Low Profile Upper Receiver AR-10/LR-308 Anodized Black Black Small. 308 Upper Receiver made of 7075-T6 Forged Aluminum. Specifications for Tiger Rock AR-10/LR-308 Low Profile Upper Receiver: Manufacturer: Tiger Rock Threads per Inch: 5/8x24 Finish: Black Anodized Color: Black Fabric/Material: 7075-T6 Aluminum Gun Rail: Picatinny Gun Type: Rifle Gun Make: AR Platform DPMS Gun Model: DPMS LR-308 AR-10 Condition: New Magazine Included: No Mount Type: Picatinny Attachment Type: Picatinny Features of Tiger Rock AR-10/LR-308 Low Profile Upper Receiver Flat-Top with Picatinny rails Mil-Spec dimensions Package Contents: Tiger Rock AR-10/LR-308 Low Profile Upper Receiver What firearm models does the manufacturer say Tiger Rock AR-10/LR-308 Low Profile Upper Receiver is compatible with? The manufacturer suggests that Tiger Rock AR-10/LR-308 Low Profile Upper Receiver is compatible with AR-10 DPMS LR-308Tiger Rock 308UP: Low Profile Upper Receiver AR-10/LR-308 Anodized Black Black Small