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Nefarious Arms HK416 Barrel, 9" PDW, 5.56x45mm NATO

Nefarious Arms HK416 Barrel, 9" PDW, 5.56x45mm NATO

$595.00 USD
$595.00 USD
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Shipping calculated at checkout.

Out of stock

The Nefarious Arms HK416 PDW Barrel is engineered for shooters who demand uncompromising performance, precision, and durability. Proudly made in the USA, this barrel is crafted from premium 4150 Chrome Moly steel, cold-hammer-forged for strength, and chrome-lined to ensure years of reliable accuracy. Finished in black manganese phosphate, it’s built to handle heavy use while maintaining peak performance.

Key Features:

  • Caliber: 5.56x45mm NATO
  • Barrel Length: 9"
  • Profile: PDW
  • Twist Rate: 1:7
  • Barrel Extension: A1/A3
  • Gas Block Seat Diameter: 19mm (h6 Tolerance)
  • Muzzle Threads: 1/2"x28
  • Material: 4150 Chrome Moly 
  • Finish: Black Manganese Phosphate 
  • Cold-Hammer-Forged for Strength and Consistency
  • Chrome-Lined for Years of Accurate Shooting
  • Weight: Approximately 15 oz. 
  • Made in USA 🇺🇸

Compatible With:

  • HK416 A1/A3 
  • HK MR556

Compatible Gas Blocks:

  • PDW 2-Position
  • HK A1/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

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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!

Nefarious Arms T-Shirt
Nefarious Arms T-Shirt