Aero Precision 5.56 M4 Carbine AR-15 Barrel – Pinned Gamma SL – 14.5″


  • Chambered in 5.56 NATO
  • 14.5” pinned and welded
  • VG6 Gamma SL muzzle brake
  • 4150 CMV steel
  • Salt bath Nitride finished
  • M4 profile
  • Carbine gas system
  • .0635″ gas port diameter


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SKUAPRH100402 Category

The Aero Precision 5.56 M4 Carbine AR-15 Barrel is the perfect choice for your next AR-15 build. This barrel is machined from high quality 4150 Chrome Moly Vanadium steel and finished with a heavy duty salt bath Nitride finish. The 14.5” barrel features a pinned and welded VG6 Epsilon SL muzzle brake, which brings the overall length to 16”. This two chamber muzzle brake 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 carbine length system. The 14.5” barrel is magnetic particle inspected and high pressure tested prior to leaving the factory.


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