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5.56 AR 15 Right-Side Charging Pistol Upper Assembly - 10.5" Parkerized M4 Barrel and Micro Flash Hider, 1:7 Twist Rate with 10" MLOK Split Rail Handguard

SKU:
UASC-2131-556CM410.517P-10ASRMFH
Availability:
Currently shipping same day or next business day!!
Was: $299.99
Now: $279.99
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Ergonomic performance meets compact power in this side-charging 5.56 NATO complete upper.

This AR-15 Complete Upper is a high-value, "ready-to-run" solution for your next AR pistol or short-barreled rifle (SBR) build. Chambered in 5.56 NATO, this assembly features a 10.5-inch M4 contour barrel crafted from heavy-duty 4150 Chrome Moly Vanadium steel, offering exceptional longevity and heat resistance under a classic parkerized finish. Its versatile 1:7 twist rate delivers excellent stabilization for a wide variety of bullet weights, while the carbine-length gas system ensures smooth and reliable cycling.

Engineered with a Gen2 right-side charging handle, the flat-top billet aluminum upper receiver offers superior ergonomics, making weapon manipulation and clearing fast and effortless. Up front, the barrel is wrapped in the innovative Talon 10" MLOK Split Rail handguard—slashing total rail weight by 30% compared to standard MLOK systems without sacrificing accessory real estate. Completed with a micro flash hider and a full E9310 bolt carrier group, this complete upper assembly is ready to pin directly onto any mil-spec AR-15 lower right out of the box.

Barrel

  • Chamber: 5.56 NATO
  • Contour: M4 Contour
  • Length: 10.5"
  • Twist Rate: 1:7
  • Gas System: Carbine
  • Gas Block: 0.750”
  • Muzzle Threads: 1/2 x 28
  • Feed Ramps: M4
  • Material: 4150 CMV
  • Finish: Parkerized
  • Rifling: Button Rifled
  • Muzzle: Micro Flash Hider

Handguard

  • Attachment System:  10" M-Lok
  • Finish: Type III Hardcoat Anodized (Mil-Spec)
  • Top Rail: MLOK Split Rail
  • Attachment: Barrel Nut 

Stripped Upper Receiver

  • Profile: M4 Flattop Ride-Side Charger
  • Material: Billet 7075 Aluminum
  • Finish: Type III Hardcoat Anodized (Mil-Spec)

Bolt Carrier Group

  • Profile: M16/Full-Auto Profile
  • Steel: E9310
  • Exterior: Black Nitride
  • Interior: Black Nitride
  • Gas Key: Staked
  • Charging Handle: Included

Lower receiver sold separately.

WARNING: Handling firearms parts and accessories can expose you to lead and other petroleum products known to the State of California to cause cancer and reproductive harm. For more information go to: www.P65Warnings.ca.gov

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Caliber:
5.56
Barrel Size:
10.5"
Twist Rate:
1/7
Barrel Finish:
Parkerized

We are a national retailer of individual components and not all products depicted on this website are legal in every state. Shipping of various products found on this website are prohibited to some states (such as California, Connecticut, District of Columbia, Hawaii, New Jersey, New York, Rhode Island, and Washington). The information, pictures, text or products presented on this website are not a representation by us, and should not be understood by you, that any product or completed firearm is legal to assemble or own in your state of residence. We encourage each and every builder to perform their own research about the state and federal laws that apply to them. It is your responsibility to understand the law and we encourage you to consult with an attorney or your local ATF representative.