Nefarious Arms HK416 A5 / G95 Barrel, 14.5", 5.56x45mm NATO
Nefarious Arms HK416 A5 / G95 Barrel, 14.5", 5.56x45mm NATO
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The Nefarious Arms HK416 A5 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. Whether you’re upgrading your HK416 or MR223, this barrel delivers the reliability and consistency you can trust.
Our 14.5" HK416 A5–style barrel is precision-machined for builders who want authentic HK geometry. Cut for an M27 bayonet lug and a front sight base, it mates cleanly with HK-pattern components to reproduce the European HK416A5 / G38 / G95 look and function. Gas Block Journal cut for HK A4 Style gas block, not compatible with our NA5 Adjustable Gas Block.
Key Features:
- Caliber: 5.56x45mm NATO
- Barrel Length: 14.5"
- Profile: 416 A5 / G38 / G95 Style
- Twist Rate: 1:7
- Barrel Extension: A5
- 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:
- Made in USA 🇺🇸
Compatible With:
- HK 416 A5
- HK MR223
Compatible Gas Blocks:
- HK A4/A5 Gas Block
NOT Compatible with the Nefarious Arms NA5 Adjustable Gas Block
Note:
A5 Barrel Extensions are marked "HAUS" due to an error by the barrel extension supplier. The marking is not visible once installed.
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Excellent fit and finish. My front sight base mount and bayonet lug fit was spot on. Getting it assembled and waiting on a few more parts to hit the range.
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from 62 reviewsA hard to find item which you had in stock. Order placed in the am and shipped the same day. Quality parts and outstanding service!
Shipped same day and was exactly as described! Yall are awesome! Cant wait to buy more stuff!
Heavy duty and well machined.
This company is great! Marvin is an artist, orders sometimes will take a while but rest assured when you do get it, it will be perfect, so if youre a potential customer, be patient. It will be done
I enjoyed all the products so far. I plan to purchase more products in the future, keep up the good work!
I used this tool to build a Nefarious Arms A3 IAR barrel on an MR556 upper, and it was absolutely perfect for the job. It easily held under the required torque specs with zero barrel shift. More importantly, it eliminated any worry about shearing off the index pin, ensuring near-perfect timing after installation.Before this, I attempted to use a Midwest Industries Reaction Rod but found way too much play. The MR556 platform demands tight tolerances, and a generic reaction rod simply doesn't offer the precision needed. Because this tool is made specifically for these barrels, the fit is exact. If you are doing an MR556 build, this is the tool you need.