AR-15 Threaded Assembled Receiver SetSpecifications: Shipping to FFL Dealer Required: Yes Made In America?: Yes FFL SOT Shipping Required: No Platform: AR15 Select Your Finish: Anodized Black Weight(s): 15.25 ozUpper Receiver Features: Material: Machined from 7075-T6 forged aluminum M4 Feedramps .250" takedown pin holes Works with standard AR15 components Includes Port Door and Forward AssistLower Receiver Features: Material: Machined from 7075-T6 forged aluminum Markings: "Cal Multi" Upper Tension Screw Flared Magwell Rear takedown pin detent hole is threaded for a 4-40 set screw Works with standard AR15 components and magazinesIncludes: AR-15 Assembled Upper Receiver in Anodized Black AR-15 Gen 2 Stripped Lower Receiver in Anodized Black