• Black cylindrical object on a white background
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Barrel Nut - HK416 A5

Barrel Nut - HK416 A5

$40.00 USD
$40.00 USD
Sale Sold out
Shipping calculated at checkout.

31 in stock

Precision-machined performance for your HK416 A5 or MR556 build.

The HK416 A5 Barrel Nut is a high-quality, precision-machined replacement designed to match OEM specifications for HK416 A5 and MR556 platforms. Crafted from durable hardened steel and finished to resist corrosion, it ensures a secure barrel fit, proper alignment, and dependable long-term performance for your upper receiver. Perfect for new builds, barrel swaps, or replacements.

Key Features:

  • Precision-machined replacement part
  • Compatible with HK416 A5 and MR556 platforms
  • Hardened steel construction for strength and longevity
  • Machined to OEM specifications for proper fit and alignment
  • Corrosion-resistant black DLC finish for lasting protection
  • Ideal for builds, repairs, or replacements
  • Marked with Haus Logo
  • Made in USA

Upgrade with confidence. Order your HK416 A5 Barrel Nut today and complete your build with precision.

Compatible With: 

  • HK416 A5
  • HK MR556 A4
  • HK MR223 A3
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Let customers speak for us

from 36 reviews
Brian Bell

Great part. Will install on my next build.

HK416 / MR556 / G36 Complete Gas Piston #50205381
HK416 / MR556 / G36 Complete Gas Piston #50205381
Brian Bell

Excellent service, fast shipping thank you!!

Nefarious Arms
Brian Bell

Excellent Quality, fast shipping what more could a man ask for. Thank you as always.

Barrel Nut - HK416 A5
Barrel Nut - HK416 A5
THANH D. LY

High quality and fast shipping

M110 / MKII Gas Block
M110 / MKII Gas Block
Anonymous

Quality is absolutely stellar. Nefarious arms nails it everytime

Barrel Nut - HK416 A5
Barrel Nut - HK416 A5
Anonymous

Quality is absolutely stellar. Nefarious arms nails it everytime

Enhanced Reliability Gas Piston
Enhanced Reliability Gas Piston
Zach Martin

Barrel is absolutely perfection. Knocked it out of the park

Nefarious Arms HK416 / MR556 Barrel, 10.4" HEAVY, 5.56x45mm NATO
Nefarious Arms HK416 / MR556 Barrel, 10.4" HEAVY, 5.56x45mm NATO
Zach Martin

Quality is absolutely stellar. Nefarious arms nails it everytime

Nefarious Arms
Anonymous

Quality is absolutely stellar. Nefarious arms nails it everytime

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HK416 Ejection Port Axle
Anonymous

Quality is absolutely stellar. Nefarious arms nails it everytime

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Dustin Villarreal

Helps immensely when pushing pins. Keeps everything stable and easy to work with. Keeps you from marring your barrels!

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Dustin Villarreal

Gives me the confidence to work on my 416 platform gun without damaging anything. Works on multiple platforms as well.

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Dustin Villarreal

Folding sight arrived in great shape. Works with my 33mm height rear just fine. A+

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Dustin Villarreal

Awesome tool! Its well made, helps with working on yhe 416 platform specifically. Great finish too.

Multi-Tool
Multi-Tool
Tony L.

Same ol’ great NA quality we’ve all come to expect. Super cool threads!

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