OE-SPEC 4.75" 7.62X39, AR15 Barrel- Nitride

(6 reviews)
Current Stock:
Adding to cart… The item has been added

KAK 4.75" 7.62X39 AR15 Barrel- Nitride

• Chamber- 7.62x39 True .311 Bore

• Length- 4.75"

• Gas system- Micro Pistol Length 

• Gas Block Size- .750

• Threads- 5/8-24

• Finish- Melonite 

• Twist- 1:9.5

• Material- 41V50 Chrome Moly Vanadium

• Extension- M4 Feed Ramps 

• Barrel dimpled for gas block set screw

• Weight- 11.36 OZ

• Marked for Caliber and Twist

• Fully Made In House From KAK Industry Produced Blanks

As a high volume contract manufacturer for the firearms industry, KAK is able to leverage its machining capacity to bring the same quality parts that we provide to some of the biggest names in the industry, straight to the retail customer.  We manufacture our barrels from the raw material all the way to the complete product, all under our own roof.  Our barrels are fully inspected through the entire process, including air-gauging the bores, physical measurements of the threads and outer diameters, and 100% gauging of the headspace tolerance.  Our OE-Spec line provides you with the quality you demand and the value you desire.





  • 5

    Posted by Spenser on March 23, 2022

    Great looking barrel! Shipping was fast and got here before the estimated delivery date. Haven’t had a chance to use it yet, but no doubt it will work flawlessly.

  • 5

    Posted by James on June 7, 2021

    This 4.75 762x39 barrel It is awesome I would definitely recommend others to buy this product

  • 5
    Great, unique pistol length

    Posted by Rickkari on May 16, 2021

    Bought this for a AR pistol build. Bolt jammed in barrel. Sent it back to Kak. Couldn't find issue, but sent replacement. That one works fine. Great customer service. Like other reviewer, I couldn't get it to cycle with a stock mil buffer and spring. Got it to operate properly with the lightest of the 3 lightweight kak buffers in the light weight buffer kit and a reduced power spring and a tight grip when shooting free hand. Great product and a fun, unique build. Barrel is great.

  • 5
    Works surprisingly well!

    Posted by Jim on May 9, 2021

    I decided to try this in a super compact 7.62X39 suppressed pistol. Originally had a 7.5" barrel that worked well, but the Brown Bear 196gr Sub rounds would occasionally break the speed of sound. This barrel worked flawlessly with regular supersonic, though wouldn't cycle far enough to strip a fresh round of the subsonic. I opened up the port to .093, in conjunction with an adjustable gas block and it works perfect with the Sub rounds now! It really is pretty amazing to have such a short barrel perform so well! Great Job, KAK!

  • 5

    Posted by Lavar on April 19, 2021

    I've purchased the .300 BO 4.75 inch barrel already so I figured i'd get them all lol. .. great lil AR. Barrel is very nice, they were on backorder once they came in I quickly order both 556 & 762. Shipping was very quick, nice work KAK keep it up.

  • 5
    Awesome little pistol.

    Posted by Randall on October 14, 2020

    I already had a spikes upper and lower and wanted something different. I purchased the 4.75in 7.62 barrel, low pro gas block, micro gas tube and the 7.62 bcg from kak ind. Couldn't get it to cycle initially so I purchased the light pistol buffer set from kak. Since the light buffer and strike industries cookie cutter has been installed I have not had any malfuctions. While the practicality of this pistol may not be the greatest, With the lower price of the ammo and shear fun factor this has quickly become my favorite range toy. As I am writing this review Kak is currently out of stock of these barrels. As soon as they become available again I will be purchasing more. The Shipping and communication from Kak was outstanding.