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Barrel Nut - HK 416, MR556 - Stainless Steel

SKU: HKP-17334

HK MR556, HK 416 Barrel Nut Or Socket For Barrel - Stainless Steel

A must have repair and replacement part for removal or when you have any work done to your barrel as the barrel nut may become damaged in the removal and installation processes. Made in the USA from 17-4 stainless steel finished in black oxide . The finest US made SS barrel nut on the market as they will not rust, are stronger than factory HK carbon steel offerings. Each unit also has 4 X 90 degree access holes for aiding in the install and removal of the barrel nut. Weight: 3.0 oz


  • HK 416
  • HK MR556
  • HK CR556
  • HK M27

Comparison of materials and weights of all available HK MR556, HK 416 barrel nuts:

  • German HK carbon steel 3.2 Oz.
  • 416 Stainless Steel 3.2 Oz.
  • 6AL4V Titanium 1.7 Oz.
  • 7075 Aluminum 1.1 Oz.
Condition: New
Origin: USA
Price: $39.95
In Stock
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Barrel Nut - HK 416, MR556 - Stainless Steel
Barrel Nut - HK 416, MR556 - Stainless Steel
Barrel Nut - HK 416, MR556 - Stainless Steel
Barrel Nut - HK 416, MR556 - Stainless Steel
Barrel Nut - HK 416, MR556 - Stainless Steel
Barrel Nut - HK 416, MR556 - Stainless Steel
Barrel Nut - HK 416, MR556 - Stainless Steel
Barrel Nut - HK 416, MR556 - Stainless Steel
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Product Reviews

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"USA SS Barrel Nut"

Otto Bartsch on 5/18/2016 7:25:56 PM

Overall Product Rating:


Stronger than factory part, Stainless Steel with 4 removal holes rather than 2 of original and $20 less cost . . . what could be better?!!