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Shop by Category
  • ⚠ Closeout Corner
  • 🎯 Targeted Savings
  • FALL DEALS
    • Firearms
    • Frames & Receivers
      • Hand Guns
      • Bolt Action
      • Derringer
      • Lever Action
      • Revolver
      • Semi-Automatic
      • Single Shot
      • Other
      Long Guns
        Rifles
        • Bolt Action
        • Lever Action
        • Pump Action
        • Semi-Automatic
        • Single Shot
        • Other
        Shotguns
        • Lever Action
        • Over/Under
        • Pump Action
        • Semi-Automatic
        • Side by Side
        • Single Shot
        • Other
    NFA Weapons
    • Short-Barreled Rifles
    • Short-Barreled Shotguns
    • Silencers
    • Other
  • Airguns
  • Ammunition
  • Barrels, Choke Tubes, & Muzzle Devices
  • Books, Software, & DVDs
  • Cleaning Equipment
  • Clothing
  • Electronics
  • Grips, Pads, Stocks, Bipods
  • Hard Gun Cases
  • Holsters & Pouches
  • Knives & Tools
  • Lights, Lasers, & Batteries
  • Magazines
  • Misc. Accessories
  • Non-Lethal Defense
  • Optical Accessories
  • Optics
  • Parts
  • Reloading Equipment
  • Safes & Security
  • Safety & Protection
  • SBR Barrels & Upper Receivers
  • Sights
  • Slings & Swivels
  • Soft Gun Cases, Packs, Bags
  • Survival Supplies
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  • Upper Receivers & Conversion Kits
Upper Receivers & Conversion Kits
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HK UPPER MR556A4 5.56 16.5" BLK

HK UPPER MR556A4 5.56 16.5" BLK

$2179.00 For an even lower price add to cart.

  • Model: HK51000384
  • Shipping Weight: 10lbs
  • Units in Stock 0
  • Units Available at Warehouse 0
  • Manufactured by: Heckler & Koch
Restrictions: This item may be restricted in CA CT IL NJ WA . Please verify legality in your area before ordering.
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Heckler & Koch MR556 A4 Upper Receiver, 223 Remington/5.56 NATO, 16.5" Barrel, Threaded 1/2X28, M-LOK Handguard, Anodized Finish, Black, Fits AR-15 Lower Receivers, Includes Bolt Carrier Group, Charging Handle, Buffer Weight and Buffer Spring 51000384

Product Specifications:
 
UPC: 642230270213     Barrel Length: 16.5"
Finish/Color: Anodized     Fit: AR-15
Caliber: 223 Remington     Caliber2: 556NATO
Manufacturer: Heckler & Koch     Part Number: 51000384
Model: MR556 A4 Upper Receiver     Type: Upper
Please note that images are provided to us by a third party and as such may not accurately represent the item for sale. Please order based on the part number and description or contact us with any questions.
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