Upper Assemblies

Moriarti offers the best variety of Upper Assemblies at best prices. Bring out the armorer in you by building your pistol caliber AR from the ground up or upgrading an existing one.

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  • AR-9MM ENHANCED 10.5" PISTOL LENGTH UPPER ASSEMBLY/BCG & CH/AMERICAN FLAG
    AR-9MM ENHANCED 10.5" PISTOL LENGTH UPPER ASSEMBLY/BCG & CH/AMERICAN FLAG. Images may not be an exact representation of the product.Barrel Length:10.5"Caliber:9mmMuzzle Thread:1/2x36Barrel Coating:Black NitrideMuzzle Device:Aluminum Flash Can Muzzle Diverter - BLKBolt Carrier GroupAR 9mm Cu..
    AR-9MM ENHANCED 10.5" PISTOL LENGTH UPPER ASSEMBLY/BCG & CH/AME...
    $399.95$499.95
  • MORIARTI AR-9 9MM 4.5" DIAMOND CUT 4" MLOK UPPER ASSEMBLY / MULTIPORT / CH
    The Moriarti AR-9 9mm 4.5 Diamond Cut 4 M-Lok Upper Assembly with a multiport feature, including an AR-15 Milspec Charging Handle, is a specialized upper receiver assembly designed for AR-style pistol-caliber carbines, particularly those chambered in 9mm. This specific model showcases several advanc..
    The Moriarti AR-9 9mm 4.5 Diamond Cut 4 M-Lok Upper Assembly with a...
    $299.95$399.95
  • MORIARTI AR-9 9MM 4.5" PISTOL UPPER ASSEMBLY / 4" MLOK / A2 / SLICK SIDE
    MORIARTI AR-9 9MM 4.5" PISTOL UPPER ASSEMBLY / 4" MLOK / A2 / SLICK SIDESpecs:Barrel Length: 4.5" Barrel Profile: Straight  Barrel Steel: 4150 Chrome Moly Vanadium  Barrel Finish: Nitride  Muzzle Thread: 1/2-36 Chamber: 9mm (9x19) Luger Twist Rate: 1 in 10" Barrel Extension: Bl..
    MORIARTI AR-9 9MM 4.5" PISTOL UPPER ASSEMBLY / 4" MLOK / A2 / SLICK...
    $249.95$349.95
  • MORIARTI AR-9 9MM 8.3" DIAMOND CUT 7" MLOK UPPER ASSEMBLY / BLACK / SHROUD
    The Moriarti AR-9 9MM 8.3 Diamond Cut 7 MLOK Upper Assembly is a premium upper receiver that is perfect for any 9MM AR-9 build. It features a sleek and durable 7" MLOK and barrel shroud that offers increased protection and an added level of sophistication. This AR-9 upper assembly gives your firearm..
    The Moriarti AR-9 9MM 8.3 Diamond Cut 7 MLOK Upper Assembly is a pr...
    $299.95$499.95