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.
Let customers speak for us
from 26 reviewsHelps immensely when pushing pins. Keeps everything stable and easy to work with. Keeps you from marring your barrels!
Gives me the confidence to work on my 416 platform gun without damaging anything. Works on multiple platforms as well.
Folding sight arrived in great shape. Works with my 33mm height rear just fine. A+
Awesome tool! Its well made, helps with working on yhe 416 platform specifically. Great finish too.
Same ol’ great NA quality we’ve all come to expect. Super cool threads!
For those who don’t already know, you CANNOT do better than Marvin’s barrels. Or pretty much anything Marvin makes. Spend some money, buy his stuff, own great sh*t.
Quality item. Machine work is flawless. Best HK barrel you can find brand new.
Great hard to find unmarked HK upper. Super fast shipping too!
No issues with installation. Was easy to just, just took a little time to try the different jets. You need to make a version for the MR762.
It is nice to do business with a company that provides impeccable customer service along with quality products. Very happy with my purchase of the HK 416 reaction rod.
It's always nice to have the right tool for the job. This reaction rod is precision made from quality materials and meets HK's exacting tolerances without damaging the barrel.
So far so good. Fits great! Great products! Been running there barrels for a couple years!