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Aero Precision 5.56 Mid-Length AR-15 Barrel - Pinned Epsilon SL - 14.5"

Manufactured by Aero Precision
SKU: APRH101597
MPN: APRH101597
Manufactured by Aero Precision
4 Reviews

In Stock

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This Aero Precision barrel is machined from high quality 4150 Chrome Moly Vanadium steel with a heavy duty salt bath Nitride finished. This 14.5” AR-15 barrel features a pinned and welded VG6 Epsilon SL muzzle brake bringing the overall length to 16”, so you don’t need a tax stamp or need to send it to a gunsmith. This two chamber muzzle brake also reduces flash signature and features the same outer diameter as the barrel, so you can easily install and remove a gas block. The government profile helps to reduce weight while still being rigid and utilizes a .750 gas block shelf and mid-length system. The 14.5” barrel is magnetic particle inspected and high pressure tested prior to leaving the factory.

  • Chambered in 5.56 NATO
  • 14.5” pinned and welded
  • VG6 Epsilon SL muzzle brake
  • 4150 CMV steel
  • Salt bath Nitride finished
  • M4 profile
  • Mid-length gas system
  • .0785" gas port diameter

Aero Precision takes some of the most state-of-the-art manufacturing techniques and equipment derived from their work in the aerospace industry and applies it to their products in the firearms industry. They have utilized their knowledge from years of building aircraft components to design and engineer AR-15 handguards, receiver sets, scope mounts, and more. They treat every product as if it were a precision flying machine and adhere to strict quality standards to ensure law enforcement, military, and civilian customers receive a product they can rely on.
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Barrel CoatingSalt Bath Nitride
Barrel ContourGovernment
Barrel Length14.5
Barrel LiningSalt Bath Nitride
Barrel Material41V50 Chrome Moly Vanadium Steel
BrandAero Precision
Caliber Gauge5.56 NATO
Feed RampsM4
Gas Seat Diameter.750
Gas System LengthMid-Length
Thread Pattern1/2 X 28
Twist Rate1:7
Weight26 oz.
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 www.P65Warnings.ca.gov.

Ratings & Reviews

4 reviews

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  • 1 star
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Good Value

by -

This is a great barrel for the money and I like that the Epsilon device is the same diameter as the barrel making installing gas block and tube super easy. Barrel is very accurate for 14.5” and mid length has makes it very mild. Only downside to the barrel is that it is not dimpled for gas blocks. I had to dimple it myself using a drill press to ensure that my gas block was secure. If you’re using a clamp on gas block, no biggie. But if you’re using a gas block with set screws, you definitely are going to want to make sure you dimple it before installing the gas block.


by -

Grabbed one of these to finish a build so I didn't have to deal with finding someone to pin and weld it for me and worked out awesome. Definitely recommend to anyone looking for a 14.5 setup without the hassle or having to worry about you know who coming after you!

Battle ready

by -

I decided I was going to build this next rifle as if I was going into battle tomorrow. I chose this barrel to keep it as short as possible, while still keeping it legal without it having to be registered as an SBR. Broke the barrel in by firing one round and then punching for a total of ten rounds. Then I did five three round groups, punching the barrel after each group. Did the same thing with three five round groups. When I was done, I was getting one inch groups at 100yds with 193 ball.

Great fit and finish

by -

Install was easy. Timing was done properly before welding.