GC_UPC Aero Precision AR-15 M4E1-T Upper Receiver Assembly 350 Legend 16 Barrel Carbine Length Without Bolt Carrier and Handguard - 998281" $609.99 APAR700705M101 show more like this 13.50 MidwayUSA GC_UPC Aero Precision M4E1 Threaded 16" .350 Legend Carbine Length Complete Upper with 15" ATLAS R-ONE Handguard - Anodized Black - APAR700705M101 $609.99 APAR700705M101 show more like this Calculated in Cart Classic Firearms