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Configure Your Custom AR-15 Barrel

Build a custom AR-15 barrel
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JP Ent

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Superlative Arms

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Cryogenics

$250.00

Lead Time

12 to 14 Weeks

Our ARs are tested with mil spec buffer tubes and springs. Any changes could change the way your AR functions.  

Order a custom AR-15 barrel with barrel extension. Please check our Frequently Asked Questions for our current lead times.

Gas Block Selection

  • max length with .625 Gas Block - 16"
  • max length with .750 Gas Block - 22"
  • max length with .875 Gas Block - 28"
  • max length with .936 Gas Block - 28"

Gas Block Length

All X-Caliber AR barrels are made to a 1.92" gas block lenght EXCEPT our Lightweight contour which has a 1.00" length.

Hand Lapped

Nitride

Add up to 6 weeks for Nitride to your order.

No shipping ouside the US

Lead Time

12 to 14 Weeks

Our ARs are tested with mil spec buffer tubes and springs. Any changes could change the way your AR functions.  

Order a custom AR-15 barrel with barrel extension. Please check our Frequently Asked Questions for our current lead times.

Gas Block Selection

  • max length with .625 Gas Block - 16"
  • max length with .750 Gas Block - 22"
  • max length with .875 Gas Block - 28"
  • max length with .936 Gas Block - 28"

Gas Block Length

All X-Caliber AR barrels are made to a 1.92" gas block lenght EXCEPT our Lightweight contour which has a 1.00" length.

Hand Lapped

Nitride

Add up to 6 weeks for Nitride to your order.

No shipping ouside the US

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Existing reviews
Worth the wait
Took a little longer than expected to receive due to unforeseen circumstances but VERY worth the wait. Customer service was truly outstanding.  Got a Stainless 16" HBAR in .300BLK, Pistol gas, 1-8.  Got it zeroed and am shooting sub MOA at 100yards with 147gr supers.As an apology for the late delivery they included the X-terminator break. Fits well and works well. Will be ordering my Barrels from here for all my future builds. AR-10 in 6.5 creedmore next.
From: Christopher | Date: 4/30/2017 12:55 PM
Was this review helpful? Yes No (1/0)
Yes... It is worth the wait
I ordered a 12.7 x 42mm in a Chrome-moly, with nitride and cryo treatments.  It took quite some time; almost 5 months for the order to come through.  Upon assembly, the fit and finish are second to none.  The gas block fit (and I purchased a high quality one) was incredible.  Perfect.  I took it out to the range this past weekend for the first time and I was getting consistent groups sub-2".  Considering this barrel is throwing .50 cal/350gr bowling balls down range, that's amazing.  I expect it'll only get better as I spend time with the rifle.  Couldn't be happier.  X-caliber is definitely a top tier barrel manufacturer.  I'll be back for more!
From: Owen | Date: 10/11/2017 8:37 PM
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