OE-SPEC- 5.56 12.5" Carbine Gas AR-15 Barrel- Nitride

(13 reviews)
Current Stock:
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• Chamber- 5.56 NATO

• Length-  12.5"

• Gas system- Carbine Gas 

• Gas Block Size- 750

• Threads- 1/2-28

• Finish- Nitride 

• Twist- 1:7

• Material- 41V50 Chrome Moly Vanadium

• Extension- M4 Feed Ramps 

• Barrel dimpled for gas block set screw

• Marked for Caliber and Twist

• Weight- 23.98 OZ

• Fully Made In House From KAK Industry Produced Blanks

All Barrels Are Air Gauge Inspected for Correct Bore Size & Tolerances, completed Barrels are Inspected for Proper Headspace using Calibrated Gauging.  



  • 5
    Excellent Value

    Posted by Kyle W on December 28, 2020

    This barrel is really a great deal. I chose KAK because their barrels are made from quality Green Mountain blanks, reviews are positive and forums indicated that their customer service is solid. Several people indicated highly positive interactions with the owner. I have not got to shoot it yet but the finish and filling look good and I don't anticipate any issues.

  • 5
    This is a good combat barrel

    Posted by wolfpack1998 on August 30, 2020

    This is a good-looking, nicely finished barrel that mates perfectly with my Aero Precision Upper Receiver and AIM Surplus BCG...which, BTW, passed Headspace test with my Go No-Go gauges. The chamber and muzzle threads are clean and within spec. With only 260 rounds through this barrel so far, I’m getting less than 2” groups using Federal .223 55gr ammo. Not bad for cheap factory ammo. Im hoping the groups will tighten up with match ammo. With what I e seen and experienced so far, I’d buy another KAK barrel.

  • 5
    Good Barrel

    Posted by Colin on April 21, 2020

    Good Barrel, Great Price. The only drawback is the lack of dimpling. Thank you.

  • 5
    customer service of KAK ind.

    Posted by Erik on November 23, 2019

    I ordered KAK's 12.5 5.56 on 21 nov 19. barrel was recived at my front door on 23 nov 19 you can not ask for better! A good indication that their efforts for their customers is top notch! I will be more than glad to use them on future needs.

  • 5
    GREAT barrel!

    Posted by Brian on June 13, 2019

    Shipping was SUPER quick! The barrel is perfect for my modern XM177 build. I am very happy with my choice.

  • 5
    Very happy

    Posted by Matt on March 24, 2019

    I pairing the barrel with a kak muzzle brake and an Aero upper and lower and I'm very happy with the results hitting out 250 yards no problem

  • 5
    Very satisfied

    Posted by Jim on February 25, 2019

    Completely satisfied with this barrel quality...especially at this price with very timely shipping! Looks great in my AR build!

  • 5
    Extremely pleased

    Posted by Justin on May 24, 2018

    This barrel is great! Had issues of being over gassed when suppressed but seekins adjustable gas block fixed it. Run's perfect with or without the can on. Accuracy is outstanding with junk 55gr and a 1-6x scope I'm shooting dime size groups at 50 yards and quarter sized at 100 yards. Can't beat the value and performance. For videos about the build check my Instagram @jc_nctactics more content on the barrel to follow.

  • 5

    Posted by Jose Genaro on February 24, 2018

    Received my order real quick, After i assembled my pistol I though that the barrel might have been too long but after shooting it I'm convinced I made the right choice. This barrel's a joy to shoot and very accurate now I just have to do my part and shoot better.