Precision Defense 5.56 NATO AR-15 Barrel - Mid-Length - Nitride - 16.25"

Manufactured by Precision Defense
SKU: PD-16-556-MID-NIT
MPN: PD-16-556-MID-NIT
Manufactured by Precision Defense
4 Reviews

In Stock

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Precision Defense AR platform barrels are designed to provide reliable and consistent performance as well as excellent longevity. This 16.25-inch 5.56 NATO AR-15 barrel is drilled, reamed, and button rifled to meet SAAMI Specifications, and profiled and chambered with extreme precision. This barrel features 1:7 twist rate and excellent accuracy and repeatability for thousands of rounds, while the medium profile and 16-1/4" overall length (16.13" from breech face to muzzle) make it the ideal choice for a wide range of shooting applications. Also features a mid-length gas system for an improved shooting experience.


  • 16.25-inch 5.56 NATO barrel
  • 4150/4151 CrMoV steel construction
  • Black nitride finish
  • 1/2x28 threaded muzzle
  • Mid-length gas system
  • Medium profile
  • 1:7 rate of twist
  • Made in the United States
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Barrel CoatingSalt Bath Nitride
Barrel ContourMedium
Barrel Length16.25
Barrel LiningSalt Bath Nitride
Barrel Material41V50 Chrome Moly Vanadium Steel
BrandPrecision Defense
Caliber Gauge5.56 NATO
Feed RampsM4
Gas Seat Diameter.750
Gas System LengthMid-Length
Thread Pattern1/2 X 28
Twist Rate1:7
California Prop 65 warning

 WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information go to

Ratings & Reviews

4 reviews

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Accurate barrel at a great price

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Received the barrel in two days. Installed it in my rifle. Shot some groups. Once I sighted it in shot some one hole groups with 77 grain OTM ammo. It balances better than the 18 inch heavy barrel it replaced. I would order another one if I needed a new barrel.

Very nice quality


Have not fired it yet, but the finish on it is immaculate, 10 times what the Faxon one was I sent back. The machine work is perfect, smooth, not marks, it fit in the receiver perfect. Gas block fit perfect. Rifling looks perfect, fed ramps look perfect. Very nice and good price. Faxon needs to take lessons from whoever makes these.

Very nice and good looking

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Have not fired yet but it is super nice, the finish is perfect, smooth, it fit in the receiver perfect, feed ramps look perfect.... Looks like its made by a place that knows what they are doing. Rebranded OEM supplier?? Im surprised they are not sold out, it is new and people are probably skeptical on the cheap price... its solid..

Great deal on a super nice barrel

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Its super nice, fit perfect, and the finish is so nice and smooth